@abc.abstractmethod<EOL><INDENT>def get_source_resource_query(self):<DEDENT>
return<EOL>
Gets the query for a resource.

        Multiple retrievals produce a nested ``OR`` term.

        :return: the resource query
        :rtype: ``osid.resource.ResourceQuery``
        :raise: ``Unimplemented`` -- ``supports_source_resource_query()`` is ``false``

        *compliance: optional -- This method must be implemented if
        ``supports_source_resource_query()`` is ``true``.*