@abc.abstractmethod<EOL><INDENT>def search_among_configurations(self, configuration_ids):<DEDENT>
pass<EOL>
Execute this search among the given list of configurations.

        :param configuration_ids: list of configurations
        :type configuration_ids: ``osid.id.IdList``
        :raise: ``NullArgument`` -- ``configuration_ids`` is ``null``

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