@abc.abstractmethod<EOL><INDENT>def create_gradebook(self, gradebook_form):<DEDENT>
return<EOL>
Creates a new ``Gradebook``.

        :param gradebook_form: the form for this ``Gradebook``
        :type gradebook_form: ``osid.grading.GradebookForm``
        :return: the new ``Gradebook``
        :rtype: ``osid.grading.Gradebook``
        :raise: ``IllegalState`` -- ``gradebook_form`` already used in a create transaction
        :raise: ``InvalidArgument`` -- one or more of the form elements is invalid
        :raise: ``NullArgument`` -- ``gradebook_form`` is ``null``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``PermissionDenied`` -- authorization failure
        :raise: ``Unsupported`` -- ``gradebook_form`` did not originate from ``get_gradebook_form_for_create()``

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