@abc.abstractmethod<EOL><INDENT>def get_id_value_metadata(self):<DEDENT>
return<EOL>
Gets the metadata for an ``Id`` value.

        :return: metadata for an ``Id``
        :rtype: ``osid.Metadata``
        :raise: ``IllegalState`` -- ``Parameter.getSyntax() != ID``

        *compliance: mandatory -- This method must be implemented.*