text: # 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 msrest.serialization import Model
  
  
  class DiskUpdate(Model):
      """Disk update resource.
  
      :param os_type: the Operating System type. Possible values include:
       'Windows', 'Linux'
      :type os_type: str or
       ~azure.mgmt.compute.v2018_04_01.models.OperatingSystemTypes
      :param disk_size_gb: If creationData.createOption is Empty, this field is
       mandatory and it indicates the size of the VHD to create. If this field is
       present for updates or creation with other options, it indicates a resize.
       Resizes are only allowed if the disk is not attached to a running VM, and
       can only increase the disk's size.
      :type disk_size_gb: int
      :param encryption_settings: Encryption settings for disk or snapshot
      :type encryption_settings:
       ~azure.mgmt.compute.v2018_04_01.models.EncryptionSettings
      :param tags: Resource tags
      :type tags: dict[str, str]
      :param sku:
      :type sku: ~azure.mgmt.compute.v2018_04_01.models.DiskSku
      """
  
      _attribute_map = {
          'os_type': {'key': 'properties.osType', 'type': 'OperatingSystemTypes'},
          'disk_size_gb': {'key': 'properties.diskSizeGB', 'type': 'int'},
          'encryption_settings': {'key': 'properties.encryptionSettings', 'type': 'EncryptionSettings'},
          'tags': {'key': 'tags', 'type': '{str}'},
          'sku': {'key': 'sku', 'type': 'DiskSku'},
      }
  
      def __init__(self, *, os_type=None, disk_size_gb: int=None, encryption_settings=None, tags=None, sku=None, **kwargs) -> None:
          super(DiskUpdate, self).__init__(**kwargs)
          self.os_type = os_type
          self.disk_size_gb = disk_size_gb
          self.encryption_settings = encryption_settings
          self.tags = tags
          self.sku = sku
  