docs: def get_size(vm_):
      '''
      Return the VM's size object
      '''
      vm_size = config.get_cloud_config_value(
          'fixed_instance_size', vm_, __opts__, default=None,
          search_global=False
      )
      sizes = avail_sizes()
  
      if not vm_size:
          size = next((item for item in sizes if item['name'] == 'S'), None)
          return size
  
      size = next((item for item in sizes if item['name'] == vm_size or item['id'] == vm_size), None)
      if size:
          return size
  
      raise SaltCloudNotFound(
          'The specified size, \'{0}\', could not be found.'.format(vm_size)
      )