docs: def cleanup_unattached_disks(kwargs=None, conn=None, call=None):
      '''
      .. versionadded:: 2015.8.0
  
      Cleans up all disks associated with the account, which are not attached.
      *** CAUTION *** This is a destructive function with no undo button, and no
      "Are you sure?" confirmation!
  
      CLI Examples:
  
      .. code-block:: bash
  
          salt-cloud -f cleanup_unattached_disks my-azure name=my_disk
          salt-cloud -f cleanup_unattached_disks my-azure name=my_disk delete_vhd=True
      '''
      if call != 'function':
          raise SaltCloudSystemExit(
              'The delete_disk function must be called with -f or --function.'
          )
  
      if kwargs is None:
          kwargs = {}
  
      disks = list_disks(kwargs=kwargs, conn=conn, call='function')
      for disk in disks:
          if disks[disk]['attached_to'] is None:
              del_kwargs = {
                  'name': disks[disk]['name'],
                  'delete_vhd': kwargs.get('delete_vhd', False)
              }
              log.info(
                  'Deleting disk %s, deleting VHD: %s',
                  del_kwargs['name'], del_kwargs['delete_vhd']
              )
              data = delete_disk(kwargs=del_kwargs, call='function')
      return True