@abc.abstractmethod<EOL><INDENT>def get_journal_comment_metadata(self):<DEDENT>
return<EOL>
Gets the metadata for the comment corresponding to this form submission.

        The comment is used for describing the nature of the change to
        the corresponding object for the purposes of logging and
        auditing.

        :return: metadata for the comment
        :rtype: ``osid.Metadata``


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