@abc.abstractmethod<EOL><INDENT>def get_comment_smart_book_session(self, book_id, proxy):<DEDENT>
return<EOL>
Gets the session for managing dynamic comment books for the given book.

        :param book_id: the ``Id`` of a book
        :type book_id: ``osid.id.Id``
        :param proxy: a proxy
        :type proxy: ``osid.proxy.Proxy``
        :return: ``book_id`` not found
        :rtype: ``osid.commenting.CommentSmartBookSession``
        :raise: ``NotFound`` -- ``book_id`` or ``proxy`` is ``null``
        :raise: ``NullArgument`` -- ``book_id`` or ``proxy`` is ``null``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``Unimplemented`` -- ``supports_comment_smart_book()`` is ``false``

        *compliance: optional -- This method must be implemented if
        ``supports_comment_smart_book()`` is ``true``.*