@abc.abstractmethod<EOL><INDENT>def get_commitments_by_search(self, commitment_query, commitment_search):<DEDENT>
return<EOL>
Gets the search results matching the given search query using the given search.

        :param commitment_query: the commitment search query
        :type commitment_query: ``osid.calendaring.CommitmentQuery``
        :param commitment_search: the commitment search
        :type commitment_search: ``osid.calendaring.CommitmentSearch``
        :return: the commitment search results
        :rtype: ``osid.calendaring.CommitmentSearchResults``
        :raise: ``NullArgument`` -- ``commitment_query`` or ``commitment_search`` is ``null``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``PermissionDenied`` -- authorization failure
        :raise: ``Unsupported`` -- ``commitment_search`` or ``commitment_query`` is not of this service

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