def descendents(self, cls):
if cls.cls == type or not hasattr(cls.cls, '<STR_LIT>'):<EOL><INDENT>return []<EOL><DEDENT>downs = cls.cls.__subclasses__()<EOL>return list(map(lambda c: self.find_class(c), downs))<EOL>
Returns a descendent list of documentation objects for `cls`,
which must be a documentation object.

The list will contain objects belonging to `pydoc.Class` or
`pydoc.External`. Objects belonging to the former are exported
classes either in this module or in one of its sub-modules.