@abc.abstractmethod<EOL><INDENT>def reassign_comment_to_book(self, comment_id, from_book_id, to_book_id):<DEDENT>
pass<EOL>
Moves a ``Credit`` from one ``Book`` to another.

        Mappings to other ``Books`` are unaffected.

        :param comment_id: the ``Id`` of the ``Comment``
        :type comment_id: ``osid.id.Id``
        :param from_book_id: the ``Id`` of the current ``Book``
        :type from_book_id: ``osid.id.Id``
        :param to_book_id: the ``Id`` of the destination ``Book``
        :type to_book_id: ``osid.id.Id``
        :raise: ``NotFound`` -- ``comment_id, from_book_id,`` or ``to_book_id`` not found or ``comment`` not mapped to ``from_book_id``
        :raise: ``NullArgument`` -- ``comment_id, book_id_id,`` or ``to_book_id`` is ``null``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``PermissionDenied`` -- authorization failure

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