def get_ancestor_bin_query(self):
raise errors.Unimplemented()<EOL>
Gets the query for a bin.

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

        return: (osid.resource.BinQuery) - the bin query
        raise:  Unimplemented - ``supports_ancestor_bin_query()`` is
                ``false``
        *compliance: optional -- This method must be implemented if
        ``supports_ancestor_bin_query()`` is ``true``.*