@abc.abstractmethod<EOL><INDENT>def apply_comment_query(self, comment_query):<DEDENT>
pass<EOL>
Applies a comment query to this book.

        :param comment_query: the comment query
        :type comment_query: ``osid.commenting.CommentQuery``
        :raise: ``NullArgument`` -- ``comment_query`` is ``null``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``PermissionDenied`` -- authorization failure occurred
        :raise: ``Unsupported`` -- ``comment_query`` not of this service

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