code: def compose(cls, index_classes, key=None, transform=None, name=None):
          
  
          attrs = {}
          if index_classes:
              attrs['index_classes'] = index_classes
  
          klass = type(str(name or cls.__name__), (cls, ), attrs)
  
          # let the ``configure`` method manage some fields
          configure_attrs = {}
          if key is not None:
              configure_attrs['key'] = key
          if transform is not None:
              configure_attrs['transform'] = transform
  
          if configure_attrs:
              klass = klass.configure(**configure_attrs)
  
          return klass
docs: Create a new class with the given index classes
  
          Parameters
          -----------
          index_classes: list
              The list of index classes to be used in the multi-index class to create
          name: str
              The name of the new multi-index class. If not set, it will be the same
              as the current class
          key: str
              A key to augment the default key of each index, to avoid collision.
          transform: callable
              None by default, can be set to a function that will transform the value to be indexed.
              This callable can accept one (`value`) or two (`self`, `value`) arguments