@abc.abstractmethod<EOL><INDENT>def get_book_query_from_inspector(self, book_query_inspector):<DEDENT>
return<EOL>
Gets an entry query from an inspector.

        The inspector is available from an ``BookSearchResults``.

        :param book_query_inspector: a book query inspector
        :type book_query_inspector: ``osid.commenting.BookQueryInspector``
        :return: the book query
        :rtype: ``osid.commenting.BookQuery``
        :raise: ``NullArgument`` -- ``book_query_inspector`` is ``null``
        :raise: ``Unsupported`` -- ``book_query_inspector`` is not of this service

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