@abc.abstractmethod<EOL><INDENT>def get_configurations_by_query(self, configuration_query):<DEDENT>
return<EOL>
Gets a list of ``Configurations`` matching the given search.

        :param configuration_query: the configuration query
        :type configuration_query: ``osid.configuration.ConfigurationQuery``
        :return: the returned ``ConfigurationList``
        :rtype: ``osid.configuration.ConfigurationList``
        :raise: ``NullArgument`` -- ``configuration_query`` is ``null``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``PermissionDenied`` -- authorization failure
        :raise: ``Unsupported`` -- ``configuration_query`` is not of this service

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