@dispatch.class_multimethod<EOL>def reflect_static_key(associative_cls, key):
raise NotImplementedError()<EOL>
Provide the type of 'key' which is a member of 'associative_cls'.

    Arguments:
        associative_cls: The type of the associative object (like a dict).
        key: The name to be reflected. Must be a member of  'associative_cls'.

    Returns:
        The type of 'name' or None. Invalid names should return None,
        whereas valid names with unknown type should return AnyType.