code: def is_indirect_subclass(class_, of):
      
      ensure_class(class_)
      ensure_class(of)  # TODO(xion): support predicates in addition to classes
  
      return issubclass(class_, of) and not is_direct_subclass(class_, of)
docs: Check whether given is an indirect subclass of another,
      i.e. there exists at least intermediate base between ``of`` and ``class_``.
  
      :param class_: Class to check
      :param of: Superclass to check against
  
      :return: Boolean result of the test
  
      .. versionadded:: 0.0.4