# coding=utf-8
# --------------------------------------------------------------------------
# Copyright (c) Microsoft Corporation. All rights reserved.
# Licensed under the MIT License. See License.txt in the project root for license information.
# Code generated by Microsoft (R) AutoRest Code Generator.
# Changes may cause incorrect behavior and will be lost if the code is regenerated.
# --------------------------------------------------------------------------
from typing import Any, AsyncIterable, Callable, Dict, Generic, Optional, TypeVar, Union
import warnings

from azure.core.async_paging import AsyncItemPaged, AsyncList
from azure.core.exceptions import ClientAuthenticationError, HttpResponseError, ResourceExistsError, ResourceNotFoundError, map_error
from azure.core.pipeline import PipelineResponse
from azure.core.pipeline.transport import AsyncHttpResponse, HttpRequest
from azure.core.polling import AsyncLROPoller, AsyncNoPolling, AsyncPollingMethod
from azure.mgmt.core.exceptions import ARMErrorFormat
from azure.mgmt.core.polling.async_arm_polling import AsyncARMPolling

from ... import models as _models

T = TypeVar('T')
ClsType = Optional[Callable[[PipelineResponse[HttpRequest, AsyncHttpResponse], T, Dict[str, Any]], Any]]

class VirtualMachineScaleSetsOperations:
    """VirtualMachineScaleSetsOperations async operations.

    You should not instantiate this class directly. Instead, you should create a Client instance that
    instantiates it for you and attaches it as an attribute.

    :ivar models: Alias to model classes used in this operation group.
    :type models: ~azure.mgmt.compute.v2018_04_01.models
    :param client: Client for service requests.
    :param config: Configuration of service client.
    :param serializer: An object model serializer.
    :param deserializer: An object model deserializer.
    """

    models = _models

    def __init__(self, client, config, serializer, deserializer) -> None:
        self._client = client
        self._serialize = serializer
        self._deserialize = deserializer
        self._config = config

    async def _create_or_update_initial(
        self,
        resource_group_name: str,
        vm_scale_set_name: str,
        parameters: "_models.VirtualMachineScaleSet",
        **kwargs
    ) -> "_models.VirtualMachineScaleSet":
        cls = kwargs.pop('cls', None)  # type: ClsType["_models.VirtualMachineScaleSet"]
        error_map = {
            401: ClientAuthenticationError, 404: ResourceNotFoundError, 409: ResourceExistsError
        }
        error_map.update(kwargs.pop('error_map', {}))
        api_version = "2018-04-01"
        content_type = kwargs.pop("content_type", "application/json")
        accept = "application/json"

        # Construct URL
        url = self._create_or_update_initial.metadata['url']  # type: ignore
        path_format_arguments = {
            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str'),
            'vmScaleSetName': self._serialize.url("vm_scale_set_name", vm_scale_set_name, 'str'),
            'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str'),
        }
        url = self._client.format_url(url, **path_format_arguments)

        # Construct parameters
        query_parameters = {}  # type: Dict[str, Any]
        query_parameters['api-version'] = self._serialize.query("api_version", api_version, 'str')

        # Construct headers
        header_parameters = {}  # type: Dict[str, Any]
        header_parameters['Content-Type'] = self._serialize.header("content_type", content_type, 'str')
        header_parameters['Accept'] = self._serialize.header("accept", accept, 'str')

        body_content_kwargs = {}  # type: Dict[str, Any]
        body_content = self._serialize.body(parameters, 'VirtualMachineScaleSet')
        body_content_kwargs['content'] = body_content
        request = self._client.put(url, query_parameters, header_parameters, **body_content_kwargs)
        pipeline_response = await self._client._pipeline.run(request, stream=False, **kwargs)
        response = pipeline_response.http_response

        if response.status_code not in [200, 201]:
            map_error(status_code=response.status_code, response=response, error_map=error_map)
            raise HttpResponseError(response=response, error_format=ARMErrorFormat)

        if response.status_code == 200:
            deserialized = self._deserialize('VirtualMachineScaleSet', pipeline_response)

        if response.status_code == 201:
            deserialized = self._deserialize('VirtualMachineScaleSet', pipeline_response)

        if cls:
            return cls(pipeline_response, deserialized, {})

        return deserialized
    _create_or_update_initial.metadata = {'url': '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmScaleSetName}'}  # type: ignore

    async def begin_create_or_update(
        self,
        resource_group_name: str,
        vm_scale_set_name: str,
        parameters: "_models.VirtualMachineScaleSet",
        **kwargs
    ) -> AsyncLROPoller["_models.VirtualMachineScaleSet"]:
        """Create or update a VM scale set.

        :param resource_group_name: The name of the resource group.
        :type resource_group_name: str
        :param vm_scale_set_name: The name of the VM scale set to create or update.
        :type vm_scale_set_name: str
        :param parameters: The scale set object.
        :type parameters: ~azure.mgmt.compute.v2018_04_01.models.VirtualMachineScaleSet
        :keyword callable cls: A custom type or function that will be passed the direct response
        :keyword str continuation_token: A continuation token to restart a poller from a saved state.
        :keyword polling: True for ARMPolling, False for no polling, or a
         polling object for personal polling strategy
        :paramtype polling: bool or ~azure.core.polling.AsyncPollingMethod
        :keyword int polling_interval: Default waiting time between two polls for LRO operations if no Retry-After header is present.
        :return: An instance of AsyncLROPoller that returns either VirtualMachineScaleSet or the result of cls(response)
        :rtype: ~azure.core.polling.AsyncLROPoller[~azure.mgmt.compute.v2018_04_01.models.VirtualMachineScaleSet]
        :raises ~azure.core.exceptions.HttpResponseError:
        """
        polling = kwargs.pop('polling', True)  # type: Union[bool, AsyncPollingMethod]
        cls = kwargs.pop('cls', None)  # type: ClsType["_models.VirtualMachineScaleSet"]
        lro_delay = kwargs.pop(
            'polling_interval',
            self._config.polling_interval
        )
        cont_token = kwargs.pop('continuation_token', None)  # type: Optional[str]
        if cont_token is None:
            raw_result = await self._create_or_update_initial(
                resource_group_name=resource_group_name,
                vm_scale_set_name=vm_scale_set_name,
                parameters=parameters,
                cls=lambda x,y,z: x,
                **kwargs
            )

        kwargs.pop('error_map', None)
        kwargs.pop('content_type', None)

        def get_long_running_output(pipeline_response):
            deserialized = self._deserialize('VirtualMachineScaleSet', pipeline_response)

            if cls:
                return cls(pipeline_response, deserialized, {})
            return deserialized

        path_format_arguments = {
            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str'),
            'vmScaleSetName': self._serialize.url("vm_scale_set_name", vm_scale_set_name, 'str'),
            'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str'),
        }

        if polling is True: polling_method = AsyncARMPolling(lro_delay, path_format_arguments=path_format_arguments,  **kwargs)
        elif polling is False: polling_method = AsyncNoPolling()
        else: polling_method = polling
        if cont_token:
            return AsyncLROPoller.from_continuation_token(
                polling_method=polling_method,
                continuation_token=cont_token,
                client=self._client,
                deserialization_callback=get_long_running_output
            )
        else:
            return AsyncLROPoller(self._client, raw_result, get_long_running_output, polling_method)
    begin_create_or_update.metadata = {'url': '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmScaleSetName}'}  # type: ignore

    async def _update_initial(
        self,
        resource_group_name: str,
        vm_scale_set_name: str,
        parameters: "_models.VirtualMachineScaleSetUpdate",
        **kwargs
    ) -> "_models.VirtualMachineScaleSet":
        cls = kwargs.pop('cls', None)  # type: ClsType["_models.VirtualMachineScaleSet"]
        error_map = {
            401: ClientAuthenticationError, 404: ResourceNotFoundError, 409: ResourceExistsError
        }
        error_map.update(kwargs.pop('error_map', {}))
        api_version = "2018-04-01"
        content_type = kwargs.pop("content_type", "application/json")
        accept = "application/json"

        # Construct URL
        url = self._update_initial.metadata['url']  # type: ignore
        path_format_arguments = {
            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str'),
            'vmScaleSetName': self._serialize.url("vm_scale_set_name", vm_scale_set_name, 'str'),
            'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str'),
        }
        url = self._client.format_url(url, **path_format_arguments)

        # Construct parameters
        query_parameters = {}  # type: Dict[str, Any]
        query_parameters['api-version'] = self._serialize.query("api_version", api_version, 'str')

        # Construct headers
        header_parameters = {}  # type: Dict[str, Any]
        header_parameters['Content-Type'] = self._serialize.header("content_type", content_type, 'str')
        header_parameters['Accept'] = self._serialize.header("accept", accept, 'str')

        body_content_kwargs = {}  # type: Dict[str, Any]
        body_content = self._serialize.body(parameters, 'VirtualMachineScaleSetUpdate')
        body_content_kwargs['content'] = body_content
        request = self._client.patch(url, query_parameters, header_parameters, **body_content_kwargs)
        pipeline_response = await self._client._pipeline.run(request, stream=False, **kwargs)
        response = pipeline_response.http_response

        if response.status_code not in [200]:
            map_error(status_code=response.status_code, response=response, error_map=error_map)
            raise HttpResponseError(response=response, error_format=ARMErrorFormat)

        deserialized = self._deserialize('VirtualMachineScaleSet', pipeline_response)

        if cls:
            return cls(pipeline_response, deserialized, {})

        return deserialized
    _update_initial.metadata = {'url': '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmScaleSetName}'}  # type: ignore

    async def begin_update(
        self,
        resource_group_name: str,
        vm_scale_set_name: str,
        parameters: "_models.VirtualMachineScaleSetUpdate",
        **kwargs
    ) -> AsyncLROPoller["_models.VirtualMachineScaleSet"]:
        """Update a VM scale set.

        :param resource_group_name: The name of the resource group.
        :type resource_group_name: str
        :param vm_scale_set_name: The name of the VM scale set to create or update.
        :type vm_scale_set_name: str
        :param parameters: The scale set object.
        :type parameters: ~azure.mgmt.compute.v2018_04_01.models.VirtualMachineScaleSetUpdate
        :keyword callable cls: A custom type or function that will be passed the direct response
        :keyword str continuation_token: A continuation token to restart a poller from a saved state.
        :keyword polling: True for ARMPolling, False for no polling, or a
         polling object for personal polling strategy
        :paramtype polling: bool or ~azure.core.polling.AsyncPollingMethod
        :keyword int polling_interval: Default waiting time between two polls for LRO operations if no Retry-After header is present.
        :return: An instance of AsyncLROPoller that returns either VirtualMachineScaleSet or the result of cls(response)
        :rtype: ~azure.core.polling.AsyncLROPoller[~azure.mgmt.compute.v2018_04_01.models.VirtualMachineScaleSet]
        :raises ~azure.core.exceptions.HttpResponseError:
        """
        polling = kwargs.pop('polling', True)  # type: Union[bool, AsyncPollingMethod]
        cls = kwargs.pop('cls', None)  # type: ClsType["_models.VirtualMachineScaleSet"]
        lro_delay = kwargs.pop(
            'polling_interval',
            self._config.polling_interval
        )
        cont_token = kwargs.pop('continuation_token', None)  # type: Optional[str]
        if cont_token is None:
            raw_result = await self._update_initial(
                resource_group_name=resource_group_name,
                vm_scale_set_name=vm_scale_set_name,
                parameters=parameters,
                cls=lambda x,y,z: x,
                **kwargs
            )

        kwargs.pop('error_map', None)
        kwargs.pop('content_type', None)

        def get_long_running_output(pipeline_response):
            deserialized = self._deserialize('VirtualMachineScaleSet', pipeline_response)

            if cls:
                return cls(pipeline_response, deserialized, {})
            return deserialized

        path_format_arguments = {
            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str'),
            'vmScaleSetName': self._serialize.url("vm_scale_set_name", vm_scale_set_name, 'str'),
            'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str'),
        }

        if polling is True: polling_method = AsyncARMPolling(lro_delay, path_format_arguments=path_format_arguments,  **kwargs)
        elif polling is False: polling_method = AsyncNoPolling()
        else: polling_method = polling
        if cont_token:
            return AsyncLROPoller.from_continuation_token(
                polling_method=polling_method,
                continuation_token=cont_token,
                client=self._client,
                deserialization_callback=get_long_running_output
            )
        else:
            return AsyncLROPoller(self._client, raw_result, get_long_running_output, polling_method)
    begin_update.metadata = {'url': '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmScaleSetName}'}  # type: ignore

    async def _delete_initial(
        self,
        resource_group_name: str,
        vm_scale_set_name: str,
        **kwargs
    ) -> None:
        cls = kwargs.pop('cls', None)  # type: ClsType[None]
        error_map = {
            401: ClientAuthenticationError, 404: ResourceNotFoundError, 409: ResourceExistsError
        }
        error_map.update(kwargs.pop('error_map', {}))
        api_version = "2018-04-01"

        # Construct URL
        url = self._delete_initial.metadata['url']  # type: ignore
        path_format_arguments = {
            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str'),
            'vmScaleSetName': self._serialize.url("vm_scale_set_name", vm_scale_set_name, 'str'),
            'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str'),
        }
        url = self._client.format_url(url, **path_format_arguments)

        # Construct parameters
        query_parameters = {}  # type: Dict[str, Any]
        query_parameters['api-version'] = self._serialize.query("api_version", api_version, 'str')

        # Construct headers
        header_parameters = {}  # type: Dict[str, Any]

        request = self._client.delete(url, query_parameters, header_parameters)
        pipeline_response = await self._client._pipeline.run(request, stream=False, **kwargs)
        response = pipeline_response.http_response

        if response.status_code not in [200, 202, 204]:
            map_error(status_code=response.status_code, response=response, error_map=error_map)
            raise HttpResponseError(response=response, error_format=ARMErrorFormat)

        if cls:
            return cls(pipeline_response, None, {})

    _delete_initial.metadata = {'url': '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmScaleSetName}'}  # type: ignore

    async def begin_delete(
        self,
        resource_group_name: str,
        vm_scale_set_name: str,
        **kwargs
    ) -> AsyncLROPoller[None]:
        """Deletes a VM scale set.

        :param resource_group_name: The name of the resource group.
        :type resource_group_name: str
        :param vm_scale_set_name: The name of the VM scale set.
        :type vm_scale_set_name: str
        :keyword callable cls: A custom type or function that will be passed the direct response
        :keyword str continuation_token: A continuation token to restart a poller from a saved state.
        :keyword polling: True for ARMPolling, False for no polling, or a
         polling object for personal polling strategy
        :paramtype polling: bool or ~azure.core.polling.AsyncPollingMethod
        :keyword int polling_interval: Default waiting time between two polls for LRO operations if no Retry-After header is present.
        :return: An instance of AsyncLROPoller that returns either None or the result of cls(response)
        :rtype: ~azure.core.polling.AsyncLROPoller[None]
        :raises ~azure.core.exceptions.HttpResponseError:
        """
        polling = kwargs.pop('polling', True)  # type: Union[bool, AsyncPollingMethod]
        cls = kwargs.pop('cls', None)  # type: ClsType[None]
        lro_delay = kwargs.pop(
            'polling_interval',
            self._config.polling_interval
        )
        cont_token = kwargs.pop('continuation_token', None)  # type: Optional[str]
        if cont_token is None:
            raw_result = await self._delete_initial(
                resource_group_name=resource_group_name,
                vm_scale_set_name=vm_scale_set_name,
                cls=lambda x,y,z: x,
                **kwargs
            )

        kwargs.pop('error_map', None)
        kwargs.pop('content_type', None)

        def get_long_running_output(pipeline_response):
            if cls:
                return cls(pipeline_response, None, {})

        path_format_arguments = {
            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str'),
            'vmScaleSetName': self._serialize.url("vm_scale_set_name", vm_scale_set_name, 'str'),
            'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str'),
        }

        if polling is True: polling_method = AsyncARMPolling(lro_delay, path_format_arguments=path_format_arguments,  **kwargs)
        elif polling is False: polling_method = AsyncNoPolling()
        else: polling_method = polling
        if cont_token:
            return AsyncLROPoller.from_continuation_token(
                polling_method=polling_method,
                continuation_token=cont_token,
                client=self._client,
                deserialization_callback=get_long_running_output
            )
        else:
            return AsyncLROPoller(self._client, raw_result, get_long_running_output, polling_method)
    begin_delete.metadata = {'url': '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmScaleSetName}'}  # type: ignore

    async def get(
        self,
        resource_group_name: str,
        vm_scale_set_name: str,
        **kwargs
    ) -> "_models.VirtualMachineScaleSet":
        """Display information about a virtual machine scale set.

        :param resource_group_name: The name of the resource group.
        :type resource_group_name: str
        :param vm_scale_set_name: The name of the VM scale set.
        :type vm_scale_set_name: str
        :keyword callable cls: A custom type or function that will be passed the direct response
        :return: VirtualMachineScaleSet, or the result of cls(response)
        :rtype: ~azure.mgmt.compute.v2018_04_01.models.VirtualMachineScaleSet
        :raises: ~azure.core.exceptions.HttpResponseError
        """
        cls = kwargs.pop('cls', None)  # type: ClsType["_models.VirtualMachineScaleSet"]
        error_map = {
            401: ClientAuthenticationError, 404: ResourceNotFoundError, 409: ResourceExistsError
        }
        error_map.update(kwargs.pop('error_map', {}))
        api_version = "2018-04-01"
        accept = "application/json"

        # Construct URL
        url = self.get.metadata['url']  # type: ignore
        path_format_arguments = {
            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str'),
            'vmScaleSetName': self._serialize.url("vm_scale_set_name", vm_scale_set_name, 'str'),
            'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str'),
        }
        url = self._client.format_url(url, **path_format_arguments)

        # Construct parameters
        query_parameters = {}  # type: Dict[str, Any]
        query_parameters['api-version'] = self._serialize.query("api_version", api_version, 'str')

        # Construct headers
        header_parameters = {}  # type: Dict[str, Any]
        header_parameters['Accept'] = self._serialize.header("accept", accept, 'str')

        request = self._client.get(url, query_parameters, header_parameters)
        pipeline_response = await self._client._pipeline.run(request, stream=False, **kwargs)
        response = pipeline_response.http_response

        if response.status_code not in [200]:
            map_error(status_code=response.status_code, response=response, error_map=error_map)
            raise HttpResponseError(response=response, error_format=ARMErrorFormat)

        deserialized = self._deserialize('VirtualMachineScaleSet', pipeline_response)

        if cls:
            return cls(pipeline_response, deserialized, {})

        return deserialized
    get.metadata = {'url': '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmScaleSetName}'}  # type: ignore

    async def _deallocate_initial(
        self,
        resource_group_name: str,
        vm_scale_set_name: str,
        vm_instance_i_ds: Optional["_models.VirtualMachineScaleSetVMInstanceIDs"] = None,
        **kwargs
    ) -> None:
        cls = kwargs.pop('cls', None)  # type: ClsType[None]
        error_map = {
            401: ClientAuthenticationError, 404: ResourceNotFoundError, 409: ResourceExistsError
        }
        error_map.update(kwargs.pop('error_map', {}))
        api_version = "2018-04-01"
        content_type = kwargs.pop("content_type", "application/json")

        # Construct URL
        url = self._deallocate_initial.metadata['url']  # type: ignore
        path_format_arguments = {
            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str'),
            'vmScaleSetName': self._serialize.url("vm_scale_set_name", vm_scale_set_name, 'str'),
            'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str'),
        }
        url = self._client.format_url(url, **path_format_arguments)

        # Construct parameters
        query_parameters = {}  # type: Dict[str, Any]
        query_parameters['api-version'] = self._serialize.query("api_version", api_version, 'str')

        # Construct headers
        header_parameters = {}  # type: Dict[str, Any]
        header_parameters['Content-Type'] = self._serialize.header("content_type", content_type, 'str')

        body_content_kwargs = {}  # type: Dict[str, Any]
        if vm_instance_i_ds is not None:
            body_content = self._serialize.body(vm_instance_i_ds, 'VirtualMachineScaleSetVMInstanceIDs')
        else:
            body_content = None
        body_content_kwargs['content'] = body_content
        request = self._client.post(url, query_parameters, header_parameters, **body_content_kwargs)
        pipeline_response = await self._client._pipeline.run(request, stream=False, **kwargs)
        response = pipeline_response.http_response

        if response.status_code not in [200, 202]:
            map_error(status_code=response.status_code, response=response, error_map=error_map)
            raise HttpResponseError(response=response, error_format=ARMErrorFormat)

        if cls:
            return cls(pipeline_response, None, {})

    _deallocate_initial.metadata = {'url': '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmScaleSetName}/deallocate'}  # type: ignore

    async def begin_deallocate(
        self,
        resource_group_name: str,
        vm_scale_set_name: str,
        vm_instance_i_ds: Optional["_models.VirtualMachineScaleSetVMInstanceIDs"] = None,
        **kwargs
    ) -> AsyncLROPoller[None]:
        """Deallocates specific virtual machines in a VM scale set. Shuts down the virtual machines and
        releases the compute resources. You are not billed for the compute resources that this virtual
        machine scale set deallocates.

        :param resource_group_name: The name of the resource group.
        :type resource_group_name: str
        :param vm_scale_set_name: The name of the VM scale set.
        :type vm_scale_set_name: str
        :param vm_instance_i_ds: A list of virtual machine instance IDs from the VM scale set.
        :type vm_instance_i_ds: ~azure.mgmt.compute.v2018_04_01.models.VirtualMachineScaleSetVMInstanceIDs
        :keyword callable cls: A custom type or function that will be passed the direct response
        :keyword str continuation_token: A continuation token to restart a poller from a saved state.
        :keyword polling: True for ARMPolling, False for no polling, or a
         polling object for personal polling strategy
        :paramtype polling: bool or ~azure.core.polling.AsyncPollingMethod
        :keyword int polling_interval: Default waiting time between two polls for LRO operations if no Retry-After header is present.
        :return: An instance of AsyncLROPoller that returns either None or the result of cls(response)
        :rtype: ~azure.core.polling.AsyncLROPoller[None]
        :raises ~azure.core.exceptions.HttpResponseError:
        """
        polling = kwargs.pop('polling', True)  # type: Union[bool, AsyncPollingMethod]
        cls = kwargs.pop('cls', None)  # type: ClsType[None]
        lro_delay = kwargs.pop(
            'polling_interval',
            self._config.polling_interval
        )
        cont_token = kwargs.pop('continuation_token', None)  # type: Optional[str]
        if cont_token is None:
            raw_result = await self._deallocate_initial(
                resource_group_name=resource_group_name,
                vm_scale_set_name=vm_scale_set_name,
                vm_instance_i_ds=vm_instance_i_ds,
                cls=lambda x,y,z: x,
                **kwargs
            )

        kwargs.pop('error_map', None)
        kwargs.pop('content_type', None)

        def get_long_running_output(pipeline_response):
            if cls:
                return cls(pipeline_response, None, {})

        path_format_arguments = {
            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str'),
            'vmScaleSetName': self._serialize.url("vm_scale_set_name", vm_scale_set_name, 'str'),
            'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str'),
        }

        if polling is True: polling_method = AsyncARMPolling(lro_delay, path_format_arguments=path_format_arguments,  **kwargs)
        elif polling is False: polling_method = AsyncNoPolling()
        else: polling_method = polling
        if cont_token:
            return AsyncLROPoller.from_continuation_token(
                polling_method=polling_method,
                continuation_token=cont_token,
                client=self._client,
                deserialization_callback=get_long_running_output
            )
        else:
            return AsyncLROPoller(self._client, raw_result, get_long_running_output, polling_method)
    begin_deallocate.metadata = {'url': '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmScaleSetName}/deallocate'}  # type: ignore

    async def _delete_instances_initial(
        self,
        resource_group_name: str,
        vm_scale_set_name: str,
        vm_instance_i_ds: "_models.VirtualMachineScaleSetVMInstanceRequiredIDs",
        **kwargs
    ) -> None:
        cls = kwargs.pop('cls', None)  # type: ClsType[None]
        error_map = {
            401: ClientAuthenticationError, 404: ResourceNotFoundError, 409: ResourceExistsError
        }
        error_map.update(kwargs.pop('error_map', {}))
        api_version = "2018-04-01"
        content_type = kwargs.pop("content_type", "application/json")

        # Construct URL
        url = self._delete_instances_initial.metadata['url']  # type: ignore
        path_format_arguments = {
            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str'),
            'vmScaleSetName': self._serialize.url("vm_scale_set_name", vm_scale_set_name, 'str'),
            'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str'),
        }
        url = self._client.format_url(url, **path_format_arguments)

        # Construct parameters
        query_parameters = {}  # type: Dict[str, Any]
        query_parameters['api-version'] = self._serialize.query("api_version", api_version, 'str')

        # Construct headers
        header_parameters = {}  # type: Dict[str, Any]
        header_parameters['Content-Type'] = self._serialize.header("content_type", content_type, 'str')

        body_content_kwargs = {}  # type: Dict[str, Any]
        body_content = self._serialize.body(vm_instance_i_ds, 'VirtualMachineScaleSetVMInstanceRequiredIDs')
        body_content_kwargs['content'] = body_content
        request = self._client.post(url, query_parameters, header_parameters, **body_content_kwargs)
        pipeline_response = await self._client._pipeline.run(request, stream=False, **kwargs)
        response = pipeline_response.http_response

        if response.status_code not in [200, 202]:
            map_error(status_code=response.status_code, response=response, error_map=error_map)
            raise HttpResponseError(response=response, error_format=ARMErrorFormat)

        if cls:
            return cls(pipeline_response, None, {})

    _delete_instances_initial.metadata = {'url': '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmScaleSetName}/delete'}  # type: ignore

    async def begin_delete_instances(
        self,
        resource_group_name: str,
        vm_scale_set_name: str,
        vm_instance_i_ds: "_models.VirtualMachineScaleSetVMInstanceRequiredIDs",
        **kwargs
    ) -> AsyncLROPoller[None]:
        """Deletes virtual machines in a VM scale set.

        :param resource_group_name: The name of the resource group.
        :type resource_group_name: str
        :param vm_scale_set_name: The name of the VM scale set.
        :type vm_scale_set_name: str
        :param vm_instance_i_ds: A list of virtual machine instance IDs from the VM scale set.
        :type vm_instance_i_ds: ~azure.mgmt.compute.v2018_04_01.models.VirtualMachineScaleSetVMInstanceRequiredIDs
        :keyword callable cls: A custom type or function that will be passed the direct response
        :keyword str continuation_token: A continuation token to restart a poller from a saved state.
        :keyword polling: True for ARMPolling, False for no polling, or a
         polling object for personal polling strategy
        :paramtype polling: bool or ~azure.core.polling.AsyncPollingMethod
        :keyword int polling_interval: Default waiting time between two polls for LRO operations if no Retry-After header is present.
        :return: An instance of AsyncLROPoller that returns either None or the result of cls(response)
        :rtype: ~azure.core.polling.AsyncLROPoller[None]
        :raises ~azure.core.exceptions.HttpResponseError:
        """
        polling = kwargs.pop('polling', True)  # type: Union[bool, AsyncPollingMethod]
        cls = kwargs.pop('cls', None)  # type: ClsType[None]
        lro_delay = kwargs.pop(
            'polling_interval',
            self._config.polling_interval
        )
        cont_token = kwargs.pop('continuation_token', None)  # type: Optional[str]
        if cont_token is None:
            raw_result = await self._delete_instances_initial(
                resource_group_name=resource_group_name,
                vm_scale_set_name=vm_scale_set_name,
                vm_instance_i_ds=vm_instance_i_ds,
                cls=lambda x,y,z: x,
                **kwargs
            )

        kwargs.pop('error_map', None)
        kwargs.pop('content_type', None)

        def get_long_running_output(pipeline_response):
            if cls:
                return cls(pipeline_response, None, {})

        path_format_arguments = {
            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str'),
            'vmScaleSetName': self._serialize.url("vm_scale_set_name", vm_scale_set_name, 'str'),
            'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str'),
        }

        if polling is True: polling_method = AsyncARMPolling(lro_delay, path_format_arguments=path_format_arguments,  **kwargs)
        elif polling is False: polling_method = AsyncNoPolling()
        else: polling_method = polling
        if cont_token:
            return AsyncLROPoller.from_continuation_token(
                polling_method=polling_method,
                continuation_token=cont_token,
                client=self._client,
                deserialization_callback=get_long_running_output
            )
        else:
            return AsyncLROPoller(self._client, raw_result, get_long_running_output, polling_method)
    begin_delete_instances.metadata = {'url': '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmScaleSetName}/delete'}  # type: ignore

    async def get_instance_view(
        self,
        resource_group_name: str,
        vm_scale_set_name: str,
        **kwargs
    ) -> "_models.VirtualMachineScaleSetInstanceView":
        """Gets the status of a VM scale set instance.

        :param resource_group_name: The name of the resource group.
        :type resource_group_name: str
        :param vm_scale_set_name: The name of the VM scale set.
        :type vm_scale_set_name: str
        :keyword callable cls: A custom type or function that will be passed the direct response
        :return: VirtualMachineScaleSetInstanceView, or the result of cls(response)
        :rtype: ~azure.mgmt.compute.v2018_04_01.models.VirtualMachineScaleSetInstanceView
        :raises: ~azure.core.exceptions.HttpResponseError
        """
        cls = kwargs.pop('cls', None)  # type: ClsType["_models.VirtualMachineScaleSetInstanceView"]
        error_map = {
            401: ClientAuthenticationError, 404: ResourceNotFoundError, 409: ResourceExistsError
        }
        error_map.update(kwargs.pop('error_map', {}))
        api_version = "2018-04-01"
        accept = "application/json"

        # Construct URL
        url = self.get_instance_view.metadata['url']  # type: ignore
        path_format_arguments = {
            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str'),
            'vmScaleSetName': self._serialize.url("vm_scale_set_name", vm_scale_set_name, 'str'),
            'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str'),
        }
        url = self._client.format_url(url, **path_format_arguments)

        # Construct parameters
        query_parameters = {}  # type: Dict[str, Any]
        query_parameters['api-version'] = self._serialize.query("api_version", api_version, 'str')

        # Construct headers
        header_parameters = {}  # type: Dict[str, Any]
        header_parameters['Accept'] = self._serialize.header("accept", accept, 'str')

        request = self._client.get(url, query_parameters, header_parameters)
        pipeline_response = await self._client._pipeline.run(request, stream=False, **kwargs)
        response = pipeline_response.http_response

        if response.status_code not in [200]:
            map_error(status_code=response.status_code, response=response, error_map=error_map)
            raise HttpResponseError(response=response, error_format=ARMErrorFormat)

        deserialized = self._deserialize('VirtualMachineScaleSetInstanceView', pipeline_response)

        if cls:
            return cls(pipeline_response, deserialized, {})

        return deserialized
    get_instance_view.metadata = {'url': '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmScaleSetName}/instanceView'}  # type: ignore

    def list(
        self,
        resource_group_name: str,
        **kwargs
    ) -> AsyncIterable["_models.VirtualMachineScaleSetListResult"]:
        """Gets a list of all VM scale sets under a resource group.

        :param resource_group_name: The name of the resource group.
        :type resource_group_name: str
        :keyword callable cls: A custom type or function that will be passed the direct response
        :return: An iterator like instance of either VirtualMachineScaleSetListResult or the result of cls(response)
        :rtype: ~azure.core.async_paging.AsyncItemPaged[~azure.mgmt.compute.v2018_04_01.models.VirtualMachineScaleSetListResult]
        :raises: ~azure.core.exceptions.HttpResponseError
        """
        cls = kwargs.pop('cls', None)  # type: ClsType["_models.VirtualMachineScaleSetListResult"]
        error_map = {
            401: ClientAuthenticationError, 404: ResourceNotFoundError, 409: ResourceExistsError
        }
        error_map.update(kwargs.pop('error_map', {}))
        api_version = "2018-04-01"
        accept = "application/json"

        def prepare_request(next_link=None):
            # Construct headers
            header_parameters = {}  # type: Dict[str, Any]
            header_parameters['Accept'] = self._serialize.header("accept", accept, 'str')

            if not next_link:
                # Construct URL
                url = self.list.metadata['url']  # type: ignore
                path_format_arguments = {
                    'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str'),
                    'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str'),
                }
                url = self._client.format_url(url, **path_format_arguments)
                # Construct parameters
                query_parameters = {}  # type: Dict[str, Any]
                query_parameters['api-version'] = self._serialize.query("api_version", api_version, 'str')

                request = self._client.get(url, query_parameters, header_parameters)
            else:
                url = next_link
                query_parameters = {}  # type: Dict[str, Any]
                request = self._client.get(url, query_parameters, header_parameters)
            return request

        async def extract_data(pipeline_response):
            deserialized = self._deserialize('VirtualMachineScaleSetListResult', pipeline_response)
            list_of_elem = deserialized.value
            if cls:
                list_of_elem = cls(list_of_elem)
            return deserialized.next_link or None, AsyncList(list_of_elem)

        async def get_next(next_link=None):
            request = prepare_request(next_link)

            pipeline_response = await self._client._pipeline.run(request, stream=False, **kwargs)
            response = pipeline_response.http_response

            if response.status_code not in [200]:
                map_error(status_code=response.status_code, response=response, error_map=error_map)
                raise HttpResponseError(response=response, error_format=ARMErrorFormat)

            return pipeline_response

        return AsyncItemPaged(
            get_next, extract_data
        )
    list.metadata = {'url': '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets'}  # type: ignore

    def list_all(
        self,
        **kwargs
    ) -> AsyncIterable["_models.VirtualMachineScaleSetListWithLinkResult"]:
        """Gets a list of all VM Scale Sets in the subscription, regardless of the associated resource
        group. Use nextLink property in the response to get the next page of VM Scale Sets. Do this
        till nextLink is null to fetch all the VM Scale Sets.

        :keyword callable cls: A custom type or function that will be passed the direct response
        :return: An iterator like instance of either VirtualMachineScaleSetListWithLinkResult or the result of cls(response)
        :rtype: ~azure.core.async_paging.AsyncItemPaged[~azure.mgmt.compute.v2018_04_01.models.VirtualMachineScaleSetListWithLinkResult]
        :raises: ~azure.core.exceptions.HttpResponseError
        """
        cls = kwargs.pop('cls', None)  # type: ClsType["_models.VirtualMachineScaleSetListWithLinkResult"]
        error_map = {
            401: ClientAuthenticationError, 404: ResourceNotFoundError, 409: ResourceExistsError
        }
        error_map.update(kwargs.pop('error_map', {}))
        api_version = "2018-04-01"
        accept = "application/json"

        def prepare_request(next_link=None):
            # Construct headers
            header_parameters = {}  # type: Dict[str, Any]
            header_parameters['Accept'] = self._serialize.header("accept", accept, 'str')

            if not next_link:
                # Construct URL
                url = self.list_all.metadata['url']  # type: ignore
                path_format_arguments = {
                    'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str'),
                }
                url = self._client.format_url(url, **path_format_arguments)
                # Construct parameters
                query_parameters = {}  # type: Dict[str, Any]
                query_parameters['api-version'] = self._serialize.query("api_version", api_version, 'str')

                request = self._client.get(url, query_parameters, header_parameters)
            else:
                url = next_link
                query_parameters = {}  # type: Dict[str, Any]
                request = self._client.get(url, query_parameters, header_parameters)
            return request

        async def extract_data(pipeline_response):
            deserialized = self._deserialize('VirtualMachineScaleSetListWithLinkResult', pipeline_response)
            list_of_elem = deserialized.value
            if cls:
                list_of_elem = cls(list_of_elem)
            return deserialized.next_link or None, AsyncList(list_of_elem)

        async def get_next(next_link=None):
            request = prepare_request(next_link)

            pipeline_response = await self._client._pipeline.run(request, stream=False, **kwargs)
            response = pipeline_response.http_response

            if response.status_code not in [200]:
                map_error(status_code=response.status_code, response=response, error_map=error_map)
                raise HttpResponseError(response=response, error_format=ARMErrorFormat)

            return pipeline_response

        return AsyncItemPaged(
            get_next, extract_data
        )
    list_all.metadata = {'url': '/subscriptions/{subscriptionId}/providers/Microsoft.Compute/virtualMachineScaleSets'}  # type: ignore

    def list_skus(
        self,
        resource_group_name: str,
        vm_scale_set_name: str,
        **kwargs
    ) -> AsyncIterable["_models.VirtualMachineScaleSetListSkusResult"]:
        """Gets a list of SKUs available for your VM scale set, including the minimum and maximum VM
        instances allowed for each SKU.

        :param resource_group_name: The name of the resource group.
        :type resource_group_name: str
        :param vm_scale_set_name: The name of the VM scale set.
        :type vm_scale_set_name: str
        :keyword callable cls: A custom type or function that will be passed the direct response
        :return: An iterator like instance of either VirtualMachineScaleSetListSkusResult or the result of cls(response)
        :rtype: ~azure.core.async_paging.AsyncItemPaged[~azure.mgmt.compute.v2018_04_01.models.VirtualMachineScaleSetListSkusResult]
        :raises: ~azure.core.exceptions.HttpResponseError
        """
        cls = kwargs.pop('cls', None)  # type: ClsType["_models.VirtualMachineScaleSetListSkusResult"]
        error_map = {
            401: ClientAuthenticationError, 404: ResourceNotFoundError, 409: ResourceExistsError
        }
        error_map.update(kwargs.pop('error_map', {}))
        api_version = "2018-04-01"
        accept = "application/json"

        def prepare_request(next_link=None):
            # Construct headers
            header_parameters = {}  # type: Dict[str, Any]
            header_parameters['Accept'] = self._serialize.header("accept", accept, 'str')

            if not next_link:
                # Construct URL
                url = self.list_skus.metadata['url']  # type: ignore
                path_format_arguments = {
                    'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str'),
                    'vmScaleSetName': self._serialize.url("vm_scale_set_name", vm_scale_set_name, 'str'),
                    'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str'),
                }
                url = self._client.format_url(url, **path_format_arguments)
                # Construct parameters
                query_parameters = {}  # type: Dict[str, Any]
                query_parameters['api-version'] = self._serialize.query("api_version", api_version, 'str')

                request = self._client.get(url, query_parameters, header_parameters)
            else:
                url = next_link
                query_parameters = {}  # type: Dict[str, Any]
                request = self._client.get(url, query_parameters, header_parameters)
            return request

        async def extract_data(pipeline_response):
            deserialized = self._deserialize('VirtualMachineScaleSetListSkusResult', pipeline_response)
            list_of_elem = deserialized.value
            if cls:
                list_of_elem = cls(list_of_elem)
            return deserialized.next_link or None, AsyncList(list_of_elem)

        async def get_next(next_link=None):
            request = prepare_request(next_link)

            pipeline_response = await self._client._pipeline.run(request, stream=False, **kwargs)
            response = pipeline_response.http_response

            if response.status_code not in [200]:
                map_error(status_code=response.status_code, response=response, error_map=error_map)
                raise HttpResponseError(response=response, error_format=ARMErrorFormat)

            return pipeline_response

        return AsyncItemPaged(
            get_next, extract_data
        )
    list_skus.metadata = {'url': '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmScaleSetName}/skus'}  # type: ignore

    def get_os_upgrade_history(
        self,
        resource_group_name: str,
        vm_scale_set_name: str,
        **kwargs
    ) -> AsyncIterable["_models.VirtualMachineScaleSetListOSUpgradeHistory"]:
        """Gets list of OS upgrades on a VM scale set instance.

        :param resource_group_name: The name of the resource group.
        :type resource_group_name: str
        :param vm_scale_set_name: The name of the VM scale set.
        :type vm_scale_set_name: str
        :keyword callable cls: A custom type or function that will be passed the direct response
        :return: An iterator like instance of either VirtualMachineScaleSetListOSUpgradeHistory or the result of cls(response)
        :rtype: ~azure.core.async_paging.AsyncItemPaged[~azure.mgmt.compute.v2018_04_01.models.VirtualMachineScaleSetListOSUpgradeHistory]
        :raises: ~azure.core.exceptions.HttpResponseError
        """
        cls = kwargs.pop('cls', None)  # type: ClsType["_models.VirtualMachineScaleSetListOSUpgradeHistory"]
        error_map = {
            401: ClientAuthenticationError, 404: ResourceNotFoundError, 409: ResourceExistsError
        }
        error_map.update(kwargs.pop('error_map', {}))
        api_version = "2018-04-01"
        accept = "application/json"

        def prepare_request(next_link=None):
            # Construct headers
            header_parameters = {}  # type: Dict[str, Any]
            header_parameters['Accept'] = self._serialize.header("accept", accept, 'str')

            if not next_link:
                # Construct URL
                url = self.get_os_upgrade_history.metadata['url']  # type: ignore
                path_format_arguments = {
                    'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str'),
                    'vmScaleSetName': self._serialize.url("vm_scale_set_name", vm_scale_set_name, 'str'),
                    'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str'),
                }
                url = self._client.format_url(url, **path_format_arguments)
                # Construct parameters
                query_parameters = {}  # type: Dict[str, Any]
                query_parameters['api-version'] = self._serialize.query("api_version", api_version, 'str')

                request = self._client.get(url, query_parameters, header_parameters)
            else:
                url = next_link
                query_parameters = {}  # type: Dict[str, Any]
                request = self._client.get(url, query_parameters, header_parameters)
            return request

        async def extract_data(pipeline_response):
            deserialized = self._deserialize('VirtualMachineScaleSetListOSUpgradeHistory', pipeline_response)
            list_of_elem = deserialized.value
            if cls:
                list_of_elem = cls(list_of_elem)
            return deserialized.next_link or None, AsyncList(list_of_elem)

        async def get_next(next_link=None):
            request = prepare_request(next_link)

            pipeline_response = await self._client._pipeline.run(request, stream=False, **kwargs)
            response = pipeline_response.http_response

            if response.status_code not in [200]:
                map_error(status_code=response.status_code, response=response, error_map=error_map)
                raise HttpResponseError(response=response, error_format=ARMErrorFormat)

            return pipeline_response

        return AsyncItemPaged(
            get_next, extract_data
        )
    get_os_upgrade_history.metadata = {'url': '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmScaleSetName}/osUpgradeHistory'}  # type: ignore

    async def _power_off_initial(
        self,
        resource_group_name: str,
        vm_scale_set_name: str,
        vm_instance_i_ds: Optional["_models.VirtualMachineScaleSetVMInstanceIDs"] = None,
        **kwargs
    ) -> None:
        cls = kwargs.pop('cls', None)  # type: ClsType[None]
        error_map = {
            401: ClientAuthenticationError, 404: ResourceNotFoundError, 409: ResourceExistsError
        }
        error_map.update(kwargs.pop('error_map', {}))
        api_version = "2018-04-01"
        content_type = kwargs.pop("content_type", "application/json")

        # Construct URL
        url = self._power_off_initial.metadata['url']  # type: ignore
        path_format_arguments = {
            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str'),
            'vmScaleSetName': self._serialize.url("vm_scale_set_name", vm_scale_set_name, 'str'),
            'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str'),
        }
        url = self._client.format_url(url, **path_format_arguments)

        # Construct parameters
        query_parameters = {}  # type: Dict[str, Any]
        query_parameters['api-version'] = self._serialize.query("api_version", api_version, 'str')

        # Construct headers
        header_parameters = {}  # type: Dict[str, Any]
        header_parameters['Content-Type'] = self._serialize.header("content_type", content_type, 'str')

        body_content_kwargs = {}  # type: Dict[str, Any]
        if vm_instance_i_ds is not None:
            body_content = self._serialize.body(vm_instance_i_ds, 'VirtualMachineScaleSetVMInstanceIDs')
        else:
            body_content = None
        body_content_kwargs['content'] = body_content
        request = self._client.post(url, query_parameters, header_parameters, **body_content_kwargs)
        pipeline_response = await self._client._pipeline.run(request, stream=False, **kwargs)
        response = pipeline_response.http_response

        if response.status_code not in [200, 202]:
            map_error(status_code=response.status_code, response=response, error_map=error_map)
            raise HttpResponseError(response=response, error_format=ARMErrorFormat)

        if cls:
            return cls(pipeline_response, None, {})

    _power_off_initial.metadata = {'url': '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmScaleSetName}/poweroff'}  # type: ignore

    async def begin_power_off(
        self,
        resource_group_name: str,
        vm_scale_set_name: str,
        vm_instance_i_ds: Optional["_models.VirtualMachineScaleSetVMInstanceIDs"] = None,
        **kwargs
    ) -> AsyncLROPoller[None]:
        """Power off (stop) one or more virtual machines in a VM scale set. Note that resources are still
        attached and you are getting charged for the resources. Instead, use deallocate to release
        resources and avoid charges.

        :param resource_group_name: The name of the resource group.
        :type resource_group_name: str
        :param vm_scale_set_name: The name of the VM scale set.
        :type vm_scale_set_name: str
        :param vm_instance_i_ds: A list of virtual machine instance IDs from the VM scale set.
        :type vm_instance_i_ds: ~azure.mgmt.compute.v2018_04_01.models.VirtualMachineScaleSetVMInstanceIDs
        :keyword callable cls: A custom type or function that will be passed the direct response
        :keyword str continuation_token: A continuation token to restart a poller from a saved state.
        :keyword polling: True for ARMPolling, False for no polling, or a
         polling object for personal polling strategy
        :paramtype polling: bool or ~azure.core.polling.AsyncPollingMethod
        :keyword int polling_interval: Default waiting time between two polls for LRO operations if no Retry-After header is present.
        :return: An instance of AsyncLROPoller that returns either None or the result of cls(response)
        :rtype: ~azure.core.polling.AsyncLROPoller[None]
        :raises ~azure.core.exceptions.HttpResponseError:
        """
        polling = kwargs.pop('polling', True)  # type: Union[bool, AsyncPollingMethod]
        cls = kwargs.pop('cls', None)  # type: ClsType[None]
        lro_delay = kwargs.pop(
            'polling_interval',
            self._config.polling_interval
        )
        cont_token = kwargs.pop('continuation_token', None)  # type: Optional[str]
        if cont_token is None:
            raw_result = await self._power_off_initial(
                resource_group_name=resource_group_name,
                vm_scale_set_name=vm_scale_set_name,
                vm_instance_i_ds=vm_instance_i_ds,
                cls=lambda x,y,z: x,
                **kwargs
            )

        kwargs.pop('error_map', None)
        kwargs.pop('content_type', None)

        def get_long_running_output(pipeline_response):
            if cls:
                return cls(pipeline_response, None, {})

        path_format_arguments = {
            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str'),
            'vmScaleSetName': self._serialize.url("vm_scale_set_name", vm_scale_set_name, 'str'),
            'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str'),
        }

        if polling is True: polling_method = AsyncARMPolling(lro_delay, path_format_arguments=path_format_arguments,  **kwargs)
        elif polling is False: polling_method = AsyncNoPolling()
        else: polling_method = polling
        if cont_token:
            return AsyncLROPoller.from_continuation_token(
                polling_method=polling_method,
                continuation_token=cont_token,
                client=self._client,
                deserialization_callback=get_long_running_output
            )
        else:
            return AsyncLROPoller(self._client, raw_result, get_long_running_output, polling_method)
    begin_power_off.metadata = {'url': '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmScaleSetName}/poweroff'}  # type: ignore

    async def _restart_initial(
        self,
        resource_group_name: str,
        vm_scale_set_name: str,
        vm_instance_i_ds: Optional["_models.VirtualMachineScaleSetVMInstanceIDs"] = None,
        **kwargs
    ) -> None:
        cls = kwargs.pop('cls', None)  # type: ClsType[None]
        error_map = {
            401: ClientAuthenticationError, 404: ResourceNotFoundError, 409: ResourceExistsError
        }
        error_map.update(kwargs.pop('error_map', {}))
        api_version = "2018-04-01"
        content_type = kwargs.pop("content_type", "application/json")

        # Construct URL
        url = self._restart_initial.metadata['url']  # type: ignore
        path_format_arguments = {
            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str'),
            'vmScaleSetName': self._serialize.url("vm_scale_set_name", vm_scale_set_name, 'str'),
            'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str'),
        }
        url = self._client.format_url(url, **path_format_arguments)

        # Construct parameters
        query_parameters = {}  # type: Dict[str, Any]
        query_parameters['api-version'] = self._serialize.query("api_version", api_version, 'str')

        # Construct headers
        header_parameters = {}  # type: Dict[str, Any]
        header_parameters['Content-Type'] = self._serialize.header("content_type", content_type, 'str')

        body_content_kwargs = {}  # type: Dict[str, Any]
        if vm_instance_i_ds is not None:
            body_content = self._serialize.body(vm_instance_i_ds, 'VirtualMachineScaleSetVMInstanceIDs')
        else:
            body_content = None
        body_content_kwargs['content'] = body_content
        request = self._client.post(url, query_parameters, header_parameters, **body_content_kwargs)
        pipeline_response = await self._client._pipeline.run(request, stream=False, **kwargs)
        response = pipeline_response.http_response

        if response.status_code not in [200, 202]:
            map_error(status_code=response.status_code, response=response, error_map=error_map)
            raise HttpResponseError(response=response, error_format=ARMErrorFormat)

        if cls:
            return cls(pipeline_response, None, {})

    _restart_initial.metadata = {'url': '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmScaleSetName}/restart'}  # type: ignore

    async def begin_restart(
        self,
        resource_group_name: str,
        vm_scale_set_name: str,
        vm_instance_i_ds: Optional["_models.VirtualMachineScaleSetVMInstanceIDs"] = None,
        **kwargs
    ) -> AsyncLROPoller[None]:
        """Restarts one or more virtual machines in a VM scale set.

        :param resource_group_name: The name of the resource group.
        :type resource_group_name: str
        :param vm_scale_set_name: The name of the VM scale set.
        :type vm_scale_set_name: str
        :param vm_instance_i_ds: A list of virtual machine instance IDs from the VM scale set.
        :type vm_instance_i_ds: ~azure.mgmt.compute.v2018_04_01.models.VirtualMachineScaleSetVMInstanceIDs
        :keyword callable cls: A custom type or function that will be passed the direct response
        :keyword str continuation_token: A continuation token to restart a poller from a saved state.
        :keyword polling: True for ARMPolling, False for no polling, or a
         polling object for personal polling strategy
        :paramtype polling: bool or ~azure.core.polling.AsyncPollingMethod
        :keyword int polling_interval: Default waiting time between two polls for LRO operations if no Retry-After header is present.
        :return: An instance of AsyncLROPoller that returns either None or the result of cls(response)
        :rtype: ~azure.core.polling.AsyncLROPoller[None]
        :raises ~azure.core.exceptions.HttpResponseError:
        """
        polling = kwargs.pop('polling', True)  # type: Union[bool, AsyncPollingMethod]
        cls = kwargs.pop('cls', None)  # type: ClsType[None]
        lro_delay = kwargs.pop(
            'polling_interval',
            self._config.polling_interval
        )
        cont_token = kwargs.pop('continuation_token', None)  # type: Optional[str]
        if cont_token is None:
            raw_result = await self._restart_initial(
                resource_group_name=resource_group_name,
                vm_scale_set_name=vm_scale_set_name,
                vm_instance_i_ds=vm_instance_i_ds,
                cls=lambda x,y,z: x,
                **kwargs
            )

        kwargs.pop('error_map', None)
        kwargs.pop('content_type', None)

        def get_long_running_output(pipeline_response):
            if cls:
                return cls(pipeline_response, None, {})

        path_format_arguments = {
            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str'),
            'vmScaleSetName': self._serialize.url("vm_scale_set_name", vm_scale_set_name, 'str'),
            'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str'),
        }

        if polling is True: polling_method = AsyncARMPolling(lro_delay, path_format_arguments=path_format_arguments,  **kwargs)
        elif polling is False: polling_method = AsyncNoPolling()
        else: polling_method = polling
        if cont_token:
            return AsyncLROPoller.from_continuation_token(
                polling_method=polling_method,
                continuation_token=cont_token,
                client=self._client,
                deserialization_callback=get_long_running_output
            )
        else:
            return AsyncLROPoller(self._client, raw_result, get_long_running_output, polling_method)
    begin_restart.metadata = {'url': '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmScaleSetName}/restart'}  # type: ignore

    async def _start_initial(
        self,
        resource_group_name: str,
        vm_scale_set_name: str,
        vm_instance_i_ds: Optional["_models.VirtualMachineScaleSetVMInstanceIDs"] = None,
        **kwargs
    ) -> None:
        cls = kwargs.pop('cls', None)  # type: ClsType[None]
        error_map = {
            401: ClientAuthenticationError, 404: ResourceNotFoundError, 409: ResourceExistsError
        }
        error_map.update(kwargs.pop('error_map', {}))
        api_version = "2018-04-01"
        content_type = kwargs.pop("content_type", "application/json")

        # Construct URL
        url = self._start_initial.metadata['url']  # type: ignore
        path_format_arguments = {
            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str'),
            'vmScaleSetName': self._serialize.url("vm_scale_set_name", vm_scale_set_name, 'str'),
            'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str'),
        }
        url = self._client.format_url(url, **path_format_arguments)

        # Construct parameters
        query_parameters = {}  # type: Dict[str, Any]
        query_parameters['api-version'] = self._serialize.query("api_version", api_version, 'str')

        # Construct headers
        header_parameters = {}  # type: Dict[str, Any]
        header_parameters['Content-Type'] = self._serialize.header("content_type", content_type, 'str')

        body_content_kwargs = {}  # type: Dict[str, Any]
        if vm_instance_i_ds is not None:
            body_content = self._serialize.body(vm_instance_i_ds, 'VirtualMachineScaleSetVMInstanceIDs')
        else:
            body_content = None
        body_content_kwargs['content'] = body_content
        request = self._client.post(url, query_parameters, header_parameters, **body_content_kwargs)
        pipeline_response = await self._client._pipeline.run(request, stream=False, **kwargs)
        response = pipeline_response.http_response

        if response.status_code not in [200, 202]:
            map_error(status_code=response.status_code, response=response, error_map=error_map)
            raise HttpResponseError(response=response, error_format=ARMErrorFormat)

        if cls:
            return cls(pipeline_response, None, {})

    _start_initial.metadata = {'url': '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmScaleSetName}/start'}  # type: ignore

    async def begin_start(
        self,
        resource_group_name: str,
        vm_scale_set_name: str,
        vm_instance_i_ds: Optional["_models.VirtualMachineScaleSetVMInstanceIDs"] = None,
        **kwargs
    ) -> AsyncLROPoller[None]:
        """Starts one or more virtual machines in a VM scale set.

        :param resource_group_name: The name of the resource group.
        :type resource_group_name: str
        :param vm_scale_set_name: The name of the VM scale set.
        :type vm_scale_set_name: str
        :param vm_instance_i_ds: A list of virtual machine instance IDs from the VM scale set.
        :type vm_instance_i_ds: ~azure.mgmt.compute.v2018_04_01.models.VirtualMachineScaleSetVMInstanceIDs
        :keyword callable cls: A custom type or function that will be passed the direct response
        :keyword str continuation_token: A continuation token to restart a poller from a saved state.
        :keyword polling: True for ARMPolling, False for no polling, or a
         polling object for personal polling strategy
        :paramtype polling: bool or ~azure.core.polling.AsyncPollingMethod
        :keyword int polling_interval: Default waiting time between two polls for LRO operations if no Retry-After header is present.
        :return: An instance of AsyncLROPoller that returns either None or the result of cls(response)
        :rtype: ~azure.core.polling.AsyncLROPoller[None]
        :raises ~azure.core.exceptions.HttpResponseError:
        """
        polling = kwargs.pop('polling', True)  # type: Union[bool, AsyncPollingMethod]
        cls = kwargs.pop('cls', None)  # type: ClsType[None]
        lro_delay = kwargs.pop(
            'polling_interval',
            self._config.polling_interval
        )
        cont_token = kwargs.pop('continuation_token', None)  # type: Optional[str]
        if cont_token is None:
            raw_result = await self._start_initial(
                resource_group_name=resource_group_name,
                vm_scale_set_name=vm_scale_set_name,
                vm_instance_i_ds=vm_instance_i_ds,
                cls=lambda x,y,z: x,
                **kwargs
            )

        kwargs.pop('error_map', None)
        kwargs.pop('content_type', None)

        def get_long_running_output(pipeline_response):
            if cls:
                return cls(pipeline_response, None, {})

        path_format_arguments = {
            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str'),
            'vmScaleSetName': self._serialize.url("vm_scale_set_name", vm_scale_set_name, 'str'),
            'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str'),
        }

        if polling is True: polling_method = AsyncARMPolling(lro_delay, path_format_arguments=path_format_arguments,  **kwargs)
        elif polling is False: polling_method = AsyncNoPolling()
        else: polling_method = polling
        if cont_token:
            return AsyncLROPoller.from_continuation_token(
                polling_method=polling_method,
                continuation_token=cont_token,
                client=self._client,
                deserialization_callback=get_long_running_output
            )
        else:
            return AsyncLROPoller(self._client, raw_result, get_long_running_output, polling_method)
    begin_start.metadata = {'url': '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmScaleSetName}/start'}  # type: ignore

    async def _redeploy_initial(
        self,
        resource_group_name: str,
        vm_scale_set_name: str,
        vm_instance_i_ds: Optional["_models.VirtualMachineScaleSetVMInstanceIDs"] = None,
        **kwargs
    ) -> None:
        cls = kwargs.pop('cls', None)  # type: ClsType[None]
        error_map = {
            401: ClientAuthenticationError, 404: ResourceNotFoundError, 409: ResourceExistsError
        }
        error_map.update(kwargs.pop('error_map', {}))
        api_version = "2018-04-01"
        content_type = kwargs.pop("content_type", "application/json")

        # Construct URL
        url = self._redeploy_initial.metadata['url']  # type: ignore
        path_format_arguments = {
            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str'),
            'vmScaleSetName': self._serialize.url("vm_scale_set_name", vm_scale_set_name, 'str'),
            'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str'),
        }
        url = self._client.format_url(url, **path_format_arguments)

        # Construct parameters
        query_parameters = {}  # type: Dict[str, Any]
        query_parameters['api-version'] = self._serialize.query("api_version", api_version, 'str')

        # Construct headers
        header_parameters = {}  # type: Dict[str, Any]
        header_parameters['Content-Type'] = self._serialize.header("content_type", content_type, 'str')

        body_content_kwargs = {}  # type: Dict[str, Any]
        if vm_instance_i_ds is not None:
            body_content = self._serialize.body(vm_instance_i_ds, 'VirtualMachineScaleSetVMInstanceIDs')
        else:
            body_content = None
        body_content_kwargs['content'] = body_content
        request = self._client.post(url, query_parameters, header_parameters, **body_content_kwargs)
        pipeline_response = await self._client._pipeline.run(request, stream=False, **kwargs)
        response = pipeline_response.http_response

        if response.status_code not in [200, 202]:
            map_error(status_code=response.status_code, response=response, error_map=error_map)
            raise HttpResponseError(response=response, error_format=ARMErrorFormat)

        if cls:
            return cls(pipeline_response, None, {})

    _redeploy_initial.metadata = {'url': '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmScaleSetName}/redeploy'}  # type: ignore

    async def begin_redeploy(
        self,
        resource_group_name: str,
        vm_scale_set_name: str,
        vm_instance_i_ds: Optional["_models.VirtualMachineScaleSetVMInstanceIDs"] = None,
        **kwargs
    ) -> AsyncLROPoller[None]:
        """Shuts down all the virtual machines in the virtual machine scale set, moves them to a new node,
        and powers them back on.

        :param resource_group_name: The name of the resource group.
        :type resource_group_name: str
        :param vm_scale_set_name: The name of the VM scale set.
        :type vm_scale_set_name: str
        :param vm_instance_i_ds: A list of virtual machine instance IDs from the VM scale set.
        :type vm_instance_i_ds: ~azure.mgmt.compute.v2018_04_01.models.VirtualMachineScaleSetVMInstanceIDs
        :keyword callable cls: A custom type or function that will be passed the direct response
        :keyword str continuation_token: A continuation token to restart a poller from a saved state.
        :keyword polling: True for ARMPolling, False for no polling, or a
         polling object for personal polling strategy
        :paramtype polling: bool or ~azure.core.polling.AsyncPollingMethod
        :keyword int polling_interval: Default waiting time between two polls for LRO operations if no Retry-After header is present.
        :return: An instance of AsyncLROPoller that returns either None or the result of cls(response)
        :rtype: ~azure.core.polling.AsyncLROPoller[None]
        :raises ~azure.core.exceptions.HttpResponseError:
        """
        polling = kwargs.pop('polling', True)  # type: Union[bool, AsyncPollingMethod]
        cls = kwargs.pop('cls', None)  # type: ClsType[None]
        lro_delay = kwargs.pop(
            'polling_interval',
            self._config.polling_interval
        )
        cont_token = kwargs.pop('continuation_token', None)  # type: Optional[str]
        if cont_token is None:
            raw_result = await self._redeploy_initial(
                resource_group_name=resource_group_name,
                vm_scale_set_name=vm_scale_set_name,
                vm_instance_i_ds=vm_instance_i_ds,
                cls=lambda x,y,z: x,
                **kwargs
            )

        kwargs.pop('error_map', None)
        kwargs.pop('content_type', None)

        def get_long_running_output(pipeline_response):
            if cls:
                return cls(pipeline_response, None, {})

        path_format_arguments = {
            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str'),
            'vmScaleSetName': self._serialize.url("vm_scale_set_name", vm_scale_set_name, 'str'),
            'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str'),
        }

        if polling is True: polling_method = AsyncARMPolling(lro_delay, path_format_arguments=path_format_arguments,  **kwargs)
        elif polling is False: polling_method = AsyncNoPolling()
        else: polling_method = polling
        if cont_token:
            return AsyncLROPoller.from_continuation_token(
                polling_method=polling_method,
                continuation_token=cont_token,
                client=self._client,
                deserialization_callback=get_long_running_output
            )
        else:
            return AsyncLROPoller(self._client, raw_result, get_long_running_output, polling_method)
    begin_redeploy.metadata = {'url': '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmScaleSetName}/redeploy'}  # type: ignore

    async def _perform_maintenance_initial(
        self,
        resource_group_name: str,
        vm_scale_set_name: str,
        vm_instance_i_ds: Optional["_models.VirtualMachineScaleSetVMInstanceIDs"] = None,
        **kwargs
    ) -> None:
        cls = kwargs.pop('cls', None)  # type: ClsType[None]
        error_map = {
            401: ClientAuthenticationError, 404: ResourceNotFoundError, 409: ResourceExistsError
        }
        error_map.update(kwargs.pop('error_map', {}))
        api_version = "2018-04-01"
        content_type = kwargs.pop("content_type", "application/json")

        # Construct URL
        url = self._perform_maintenance_initial.metadata['url']  # type: ignore
        path_format_arguments = {
            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str'),
            'vmScaleSetName': self._serialize.url("vm_scale_set_name", vm_scale_set_name, 'str'),
            'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str'),
        }
        url = self._client.format_url(url, **path_format_arguments)

        # Construct parameters
        query_parameters = {}  # type: Dict[str, Any]
        query_parameters['api-version'] = self._serialize.query("api_version", api_version, 'str')

        # Construct headers
        header_parameters = {}  # type: Dict[str, Any]
        header_parameters['Content-Type'] = self._serialize.header("content_type", content_type, 'str')

        body_content_kwargs = {}  # type: Dict[str, Any]
        if vm_instance_i_ds is not None:
            body_content = self._serialize.body(vm_instance_i_ds, 'VirtualMachineScaleSetVMInstanceIDs')
        else:
            body_content = None
        body_content_kwargs['content'] = body_content
        request = self._client.post(url, query_parameters, header_parameters, **body_content_kwargs)
        pipeline_response = await self._client._pipeline.run(request, stream=False, **kwargs)
        response = pipeline_response.http_response

        if response.status_code not in [200, 202]:
            map_error(status_code=response.status_code, response=response, error_map=error_map)
            raise HttpResponseError(response=response, error_format=ARMErrorFormat)

        if cls:
            return cls(pipeline_response, None, {})

    _perform_maintenance_initial.metadata = {'url': '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmScaleSetName}/performMaintenance'}  # type: ignore

    async def begin_perform_maintenance(
        self,
        resource_group_name: str,
        vm_scale_set_name: str,
        vm_instance_i_ds: Optional["_models.VirtualMachineScaleSetVMInstanceIDs"] = None,
        **kwargs
    ) -> AsyncLROPoller[None]:
        """Perform maintenance on one or more virtual machines in a VM scale set. Operation on instances
        which are not eligible for perform maintenance will be failed. Please refer to best practices
        for more details: https://docs.microsoft.com/en-us/azure/virtual-machine-scale-sets/virtual-
        machine-scale-sets-maintenance-notifications.

        :param resource_group_name: The name of the resource group.
        :type resource_group_name: str
        :param vm_scale_set_name: The name of the VM scale set.
        :type vm_scale_set_name: str
        :param vm_instance_i_ds: A list of virtual machine instance IDs from the VM scale set.
        :type vm_instance_i_ds: ~azure.mgmt.compute.v2018_04_01.models.VirtualMachineScaleSetVMInstanceIDs
        :keyword callable cls: A custom type or function that will be passed the direct response
        :keyword str continuation_token: A continuation token to restart a poller from a saved state.
        :keyword polling: True for ARMPolling, False for no polling, or a
         polling object for personal polling strategy
        :paramtype polling: bool or ~azure.core.polling.AsyncPollingMethod
        :keyword int polling_interval: Default waiting time between two polls for LRO operations if no Retry-After header is present.
        :return: An instance of AsyncLROPoller that returns either None or the result of cls(response)
        :rtype: ~azure.core.polling.AsyncLROPoller[None]
        :raises ~azure.core.exceptions.HttpResponseError:
        """
        polling = kwargs.pop('polling', True)  # type: Union[bool, AsyncPollingMethod]
        cls = kwargs.pop('cls', None)  # type: ClsType[None]
        lro_delay = kwargs.pop(
            'polling_interval',
            self._config.polling_interval
        )
        cont_token = kwargs.pop('continuation_token', None)  # type: Optional[str]
        if cont_token is None:
            raw_result = await self._perform_maintenance_initial(
                resource_group_name=resource_group_name,
                vm_scale_set_name=vm_scale_set_name,
                vm_instance_i_ds=vm_instance_i_ds,
                cls=lambda x,y,z: x,
                **kwargs
            )

        kwargs.pop('error_map', None)
        kwargs.pop('content_type', None)

        def get_long_running_output(pipeline_response):
            if cls:
                return cls(pipeline_response, None, {})

        path_format_arguments = {
            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str'),
            'vmScaleSetName': self._serialize.url("vm_scale_set_name", vm_scale_set_name, 'str'),
            'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str'),
        }

        if polling is True: polling_method = AsyncARMPolling(lro_delay, path_format_arguments=path_format_arguments,  **kwargs)
        elif polling is False: polling_method = AsyncNoPolling()
        else: polling_method = polling
        if cont_token:
            return AsyncLROPoller.from_continuation_token(
                polling_method=polling_method,
                continuation_token=cont_token,
                client=self._client,
                deserialization_callback=get_long_running_output
            )
        else:
            return AsyncLROPoller(self._client, raw_result, get_long_running_output, polling_method)
    begin_perform_maintenance.metadata = {'url': '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmScaleSetName}/performMaintenance'}  # type: ignore

    async def _update_instances_initial(
        self,
        resource_group_name: str,
        vm_scale_set_name: str,
        vm_instance_i_ds: "_models.VirtualMachineScaleSetVMInstanceRequiredIDs",
        **kwargs
    ) -> None:
        cls = kwargs.pop('cls', None)  # type: ClsType[None]
        error_map = {
            401: ClientAuthenticationError, 404: ResourceNotFoundError, 409: ResourceExistsError
        }
        error_map.update(kwargs.pop('error_map', {}))
        api_version = "2018-04-01"
        content_type = kwargs.pop("content_type", "application/json")

        # Construct URL
        url = self._update_instances_initial.metadata['url']  # type: ignore
        path_format_arguments = {
            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str'),
            'vmScaleSetName': self._serialize.url("vm_scale_set_name", vm_scale_set_name, 'str'),
            'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str'),
        }
        url = self._client.format_url(url, **path_format_arguments)

        # Construct parameters
        query_parameters = {}  # type: Dict[str, Any]
        query_parameters['api-version'] = self._serialize.query("api_version", api_version, 'str')

        # Construct headers
        header_parameters = {}  # type: Dict[str, Any]
        header_parameters['Content-Type'] = self._serialize.header("content_type", content_type, 'str')

        body_content_kwargs = {}  # type: Dict[str, Any]
        body_content = self._serialize.body(vm_instance_i_ds, 'VirtualMachineScaleSetVMInstanceRequiredIDs')
        body_content_kwargs['content'] = body_content
        request = self._client.post(url, query_parameters, header_parameters, **body_content_kwargs)
        pipeline_response = await self._client._pipeline.run(request, stream=False, **kwargs)
        response = pipeline_response.http_response

        if response.status_code not in [200, 202]:
            map_error(status_code=response.status_code, response=response, error_map=error_map)
            raise HttpResponseError(response=response, error_format=ARMErrorFormat)

        if cls:
            return cls(pipeline_response, None, {})

    _update_instances_initial.metadata = {'url': '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmScaleSetName}/manualupgrade'}  # type: ignore

    async def begin_update_instances(
        self,
        resource_group_name: str,
        vm_scale_set_name: str,
        vm_instance_i_ds: "_models.VirtualMachineScaleSetVMInstanceRequiredIDs",
        **kwargs
    ) -> AsyncLROPoller[None]:
        """Upgrades one or more virtual machines to the latest SKU set in the VM scale set model.

        :param resource_group_name: The name of the resource group.
        :type resource_group_name: str
        :param vm_scale_set_name: The name of the VM scale set.
        :type vm_scale_set_name: str
        :param vm_instance_i_ds: A list of virtual machine instance IDs from the VM scale set.
        :type vm_instance_i_ds: ~azure.mgmt.compute.v2018_04_01.models.VirtualMachineScaleSetVMInstanceRequiredIDs
        :keyword callable cls: A custom type or function that will be passed the direct response
        :keyword str continuation_token: A continuation token to restart a poller from a saved state.
        :keyword polling: True for ARMPolling, False for no polling, or a
         polling object for personal polling strategy
        :paramtype polling: bool or ~azure.core.polling.AsyncPollingMethod
        :keyword int polling_interval: Default waiting time between two polls for LRO operations if no Retry-After header is present.
        :return: An instance of AsyncLROPoller that returns either None or the result of cls(response)
        :rtype: ~azure.core.polling.AsyncLROPoller[None]
        :raises ~azure.core.exceptions.HttpResponseError:
        """
        polling = kwargs.pop('polling', True)  # type: Union[bool, AsyncPollingMethod]
        cls = kwargs.pop('cls', None)  # type: ClsType[None]
        lro_delay = kwargs.pop(
            'polling_interval',
            self._config.polling_interval
        )
        cont_token = kwargs.pop('continuation_token', None)  # type: Optional[str]
        if cont_token is None:
            raw_result = await self._update_instances_initial(
                resource_group_name=resource_group_name,
                vm_scale_set_name=vm_scale_set_name,
                vm_instance_i_ds=vm_instance_i_ds,
                cls=lambda x,y,z: x,
                **kwargs
            )

        kwargs.pop('error_map', None)
        kwargs.pop('content_type', None)

        def get_long_running_output(pipeline_response):
            if cls:
                return cls(pipeline_response, None, {})

        path_format_arguments = {
            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str'),
            'vmScaleSetName': self._serialize.url("vm_scale_set_name", vm_scale_set_name, 'str'),
            'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str'),
        }

        if polling is True: polling_method = AsyncARMPolling(lro_delay, path_format_arguments=path_format_arguments,  **kwargs)
        elif polling is False: polling_method = AsyncNoPolling()
        else: polling_method = polling
        if cont_token:
            return AsyncLROPoller.from_continuation_token(
                polling_method=polling_method,
                continuation_token=cont_token,
                client=self._client,
                deserialization_callback=get_long_running_output
            )
        else:
            return AsyncLROPoller(self._client, raw_result, get_long_running_output, polling_method)
    begin_update_instances.metadata = {'url': '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmScaleSetName}/manualupgrade'}  # type: ignore

    async def _reimage_initial(
        self,
        resource_group_name: str,
        vm_scale_set_name: str,
        vm_instance_i_ds: Optional["_models.VirtualMachineScaleSetVMInstanceIDs"] = None,
        **kwargs
    ) -> None:
        cls = kwargs.pop('cls', None)  # type: ClsType[None]
        error_map = {
            401: ClientAuthenticationError, 404: ResourceNotFoundError, 409: ResourceExistsError
        }
        error_map.update(kwargs.pop('error_map', {}))
        api_version = "2018-04-01"
        content_type = kwargs.pop("content_type", "application/json")

        # Construct URL
        url = self._reimage_initial.metadata['url']  # type: ignore
        path_format_arguments = {
            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str'),
            'vmScaleSetName': self._serialize.url("vm_scale_set_name", vm_scale_set_name, 'str'),
            'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str'),
        }
        url = self._client.format_url(url, **path_format_arguments)

        # Construct parameters
        query_parameters = {}  # type: Dict[str, Any]
        query_parameters['api-version'] = self._serialize.query("api_version", api_version, 'str')

        # Construct headers
        header_parameters = {}  # type: Dict[str, Any]
        header_parameters['Content-Type'] = self._serialize.header("content_type", content_type, 'str')

        body_content_kwargs = {}  # type: Dict[str, Any]
        if vm_instance_i_ds is not None:
            body_content = self._serialize.body(vm_instance_i_ds, 'VirtualMachineScaleSetVMInstanceIDs')
        else:
            body_content = None
        body_content_kwargs['content'] = body_content
        request = self._client.post(url, query_parameters, header_parameters, **body_content_kwargs)
        pipeline_response = await self._client._pipeline.run(request, stream=False, **kwargs)
        response = pipeline_response.http_response

        if response.status_code not in [200, 202]:
            map_error(status_code=response.status_code, response=response, error_map=error_map)
            raise HttpResponseError(response=response, error_format=ARMErrorFormat)

        if cls:
            return cls(pipeline_response, None, {})

    _reimage_initial.metadata = {'url': '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmScaleSetName}/reimage'}  # type: ignore

    async def begin_reimage(
        self,
        resource_group_name: str,
        vm_scale_set_name: str,
        vm_instance_i_ds: Optional["_models.VirtualMachineScaleSetVMInstanceIDs"] = None,
        **kwargs
    ) -> AsyncLROPoller[None]:
        """Reimages (upgrade the operating system) one or more virtual machines in a VM scale set.

        :param resource_group_name: The name of the resource group.
        :type resource_group_name: str
        :param vm_scale_set_name: The name of the VM scale set.
        :type vm_scale_set_name: str
        :param vm_instance_i_ds: A list of virtual machine instance IDs from the VM scale set.
        :type vm_instance_i_ds: ~azure.mgmt.compute.v2018_04_01.models.VirtualMachineScaleSetVMInstanceIDs
        :keyword callable cls: A custom type or function that will be passed the direct response
        :keyword str continuation_token: A continuation token to restart a poller from a saved state.
        :keyword polling: True for ARMPolling, False for no polling, or a
         polling object for personal polling strategy
        :paramtype polling: bool or ~azure.core.polling.AsyncPollingMethod
        :keyword int polling_interval: Default waiting time between two polls for LRO operations if no Retry-After header is present.
        :return: An instance of AsyncLROPoller that returns either None or the result of cls(response)
        :rtype: ~azure.core.polling.AsyncLROPoller[None]
        :raises ~azure.core.exceptions.HttpResponseError:
        """
        polling = kwargs.pop('polling', True)  # type: Union[bool, AsyncPollingMethod]
        cls = kwargs.pop('cls', None)  # type: ClsType[None]
        lro_delay = kwargs.pop(
            'polling_interval',
            self._config.polling_interval
        )
        cont_token = kwargs.pop('continuation_token', None)  # type: Optional[str]
        if cont_token is None:
            raw_result = await self._reimage_initial(
                resource_group_name=resource_group_name,
                vm_scale_set_name=vm_scale_set_name,
                vm_instance_i_ds=vm_instance_i_ds,
                cls=lambda x,y,z: x,
                **kwargs
            )

        kwargs.pop('error_map', None)
        kwargs.pop('content_type', None)

        def get_long_running_output(pipeline_response):
            if cls:
                return cls(pipeline_response, None, {})

        path_format_arguments = {
            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str'),
            'vmScaleSetName': self._serialize.url("vm_scale_set_name", vm_scale_set_name, 'str'),
            'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str'),
        }

        if polling is True: polling_method = AsyncARMPolling(lro_delay, path_format_arguments=path_format_arguments,  **kwargs)
        elif polling is False: polling_method = AsyncNoPolling()
        else: polling_method = polling
        if cont_token:
            return AsyncLROPoller.from_continuation_token(
                polling_method=polling_method,
                continuation_token=cont_token,
                client=self._client,
                deserialization_callback=get_long_running_output
            )
        else:
            return AsyncLROPoller(self._client, raw_result, get_long_running_output, polling_method)
    begin_reimage.metadata = {'url': '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmScaleSetName}/reimage'}  # type: ignore

    async def _reimage_all_initial(
        self,
        resource_group_name: str,
        vm_scale_set_name: str,
        vm_instance_i_ds: Optional["_models.VirtualMachineScaleSetVMInstanceIDs"] = None,
        **kwargs
    ) -> None:
        cls = kwargs.pop('cls', None)  # type: ClsType[None]
        error_map = {
            401: ClientAuthenticationError, 404: ResourceNotFoundError, 409: ResourceExistsError
        }
        error_map.update(kwargs.pop('error_map', {}))
        api_version = "2018-04-01"
        content_type = kwargs.pop("content_type", "application/json")

        # Construct URL
        url = self._reimage_all_initial.metadata['url']  # type: ignore
        path_format_arguments = {
            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str'),
            'vmScaleSetName': self._serialize.url("vm_scale_set_name", vm_scale_set_name, 'str'),
            'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str'),
        }
        url = self._client.format_url(url, **path_format_arguments)

        # Construct parameters
        query_parameters = {}  # type: Dict[str, Any]
        query_parameters['api-version'] = self._serialize.query("api_version", api_version, 'str')

        # Construct headers
        header_parameters = {}  # type: Dict[str, Any]
        header_parameters['Content-Type'] = self._serialize.header("content_type", content_type, 'str')

        body_content_kwargs = {}  # type: Dict[str, Any]
        if vm_instance_i_ds is not None:
            body_content = self._serialize.body(vm_instance_i_ds, 'VirtualMachineScaleSetVMInstanceIDs')
        else:
            body_content = None
        body_content_kwargs['content'] = body_content
        request = self._client.post(url, query_parameters, header_parameters, **body_content_kwargs)
        pipeline_response = await self._client._pipeline.run(request, stream=False, **kwargs)
        response = pipeline_response.http_response

        if response.status_code not in [200, 202]:
            map_error(status_code=response.status_code, response=response, error_map=error_map)
            raise HttpResponseError(response=response, error_format=ARMErrorFormat)

        if cls:
            return cls(pipeline_response, None, {})

    _reimage_all_initial.metadata = {'url': '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmScaleSetName}/reimageall'}  # type: ignore

    async def begin_reimage_all(
        self,
        resource_group_name: str,
        vm_scale_set_name: str,
        vm_instance_i_ds: Optional["_models.VirtualMachineScaleSetVMInstanceIDs"] = None,
        **kwargs
    ) -> AsyncLROPoller[None]:
        """Reimages all the disks ( including data disks ) in the virtual machines in a VM scale set. This
        operation is only supported for managed disks.

        :param resource_group_name: The name of the resource group.
        :type resource_group_name: str
        :param vm_scale_set_name: The name of the VM scale set.
        :type vm_scale_set_name: str
        :param vm_instance_i_ds: A list of virtual machine instance IDs from the VM scale set.
        :type vm_instance_i_ds: ~azure.mgmt.compute.v2018_04_01.models.VirtualMachineScaleSetVMInstanceIDs
        :keyword callable cls: A custom type or function that will be passed the direct response
        :keyword str continuation_token: A continuation token to restart a poller from a saved state.
        :keyword polling: True for ARMPolling, False for no polling, or a
         polling object for personal polling strategy
        :paramtype polling: bool or ~azure.core.polling.AsyncPollingMethod
        :keyword int polling_interval: Default waiting time between two polls for LRO operations if no Retry-After header is present.
        :return: An instance of AsyncLROPoller that returns either None or the result of cls(response)
        :rtype: ~azure.core.polling.AsyncLROPoller[None]
        :raises ~azure.core.exceptions.HttpResponseError:
        """
        polling = kwargs.pop('polling', True)  # type: Union[bool, AsyncPollingMethod]
        cls = kwargs.pop('cls', None)  # type: ClsType[None]
        lro_delay = kwargs.pop(
            'polling_interval',
            self._config.polling_interval
        )
        cont_token = kwargs.pop('continuation_token', None)  # type: Optional[str]
        if cont_token is None:
            raw_result = await self._reimage_all_initial(
                resource_group_name=resource_group_name,
                vm_scale_set_name=vm_scale_set_name,
                vm_instance_i_ds=vm_instance_i_ds,
                cls=lambda x,y,z: x,
                **kwargs
            )

        kwargs.pop('error_map', None)
        kwargs.pop('content_type', None)

        def get_long_running_output(pipeline_response):
            if cls:
                return cls(pipeline_response, None, {})

        path_format_arguments = {
            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str'),
            'vmScaleSetName': self._serialize.url("vm_scale_set_name", vm_scale_set_name, 'str'),
            'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str'),
        }

        if polling is True: polling_method = AsyncARMPolling(lro_delay, path_format_arguments=path_format_arguments,  **kwargs)
        elif polling is False: polling_method = AsyncNoPolling()
        else: polling_method = polling
        if cont_token:
            return AsyncLROPoller.from_continuation_token(
                polling_method=polling_method,
                continuation_token=cont_token,
                client=self._client,
                deserialization_callback=get_long_running_output
            )
        else:
            return AsyncLROPoller(self._client, raw_result, get_long_running_output, polling_method)
    begin_reimage_all.metadata = {'url': '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmScaleSetName}/reimageall'}  # type: ignore

    async def force_recovery_service_fabric_platform_update_domain_walk(
        self,
        resource_group_name: str,
        vm_scale_set_name: str,
        platform_update_domain: int,
        **kwargs
    ) -> "_models.RecoveryWalkResponse":
        """Manual platform update domain walk to update virtual machines in a service fabric virtual
        machine scale set.

        :param resource_group_name: The name of the resource group.
        :type resource_group_name: str
        :param vm_scale_set_name: The name of the VM scale set.
        :type vm_scale_set_name: str
        :param platform_update_domain: The platform update domain for which a manual recovery walk is
         requested.
        :type platform_update_domain: int
        :keyword callable cls: A custom type or function that will be passed the direct response
        :return: RecoveryWalkResponse, or the result of cls(response)
        :rtype: ~azure.mgmt.compute.v2018_04_01.models.RecoveryWalkResponse
        :raises: ~azure.core.exceptions.HttpResponseError
        """
        cls = kwargs.pop('cls', None)  # type: ClsType["_models.RecoveryWalkResponse"]
        error_map = {
            401: ClientAuthenticationError, 404: ResourceNotFoundError, 409: ResourceExistsError
        }
        error_map.update(kwargs.pop('error_map', {}))
        api_version = "2018-04-01"
        accept = "application/json"

        # Construct URL
        url = self.force_recovery_service_fabric_platform_update_domain_walk.metadata['url']  # type: ignore
        path_format_arguments = {
            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str'),
            'vmScaleSetName': self._serialize.url("vm_scale_set_name", vm_scale_set_name, 'str'),
            'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str'),
        }
        url = self._client.format_url(url, **path_format_arguments)

        # Construct parameters
        query_parameters = {}  # type: Dict[str, Any]
        query_parameters['api-version'] = self._serialize.query("api_version", api_version, 'str')
        query_parameters['platformUpdateDomain'] = self._serialize.query("platform_update_domain", platform_update_domain, 'int')

        # Construct headers
        header_parameters = {}  # type: Dict[str, Any]
        header_parameters['Accept'] = self._serialize.header("accept", accept, 'str')

        request = self._client.post(url, query_parameters, header_parameters)
        pipeline_response = await self._client._pipeline.run(request, stream=False, **kwargs)
        response = pipeline_response.http_response

        if response.status_code not in [200]:
            map_error(status_code=response.status_code, response=response, error_map=error_map)
            raise HttpResponseError(response=response, error_format=ARMErrorFormat)

        deserialized = self._deserialize('RecoveryWalkResponse', pipeline_response)

        if cls:
            return cls(pipeline_response, deserialized, {})

        return deserialized
    force_recovery_service_fabric_platform_update_domain_walk.metadata = {'url': '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmScaleSetName}/forceRecoveryServiceFabricPlatformUpdateDomainWalk'}  # type: ignore
