@abc.abstractmethod<EOL><INDENT>def get_banks_by_assessment_taken(self, assessment_taken_id):<DEDENT>
return<EOL>
Gets the list of ``Banks`` mapped to an ``AssessmentTaken``.

        :param assessment_taken_id: ``Id`` of an ``AssessmentTaken``
        :type assessment_taken_id: ``osid.id.Id``
        :return: list of banks
        :rtype: ``osid.assessment.BankList``
        :raise: ``NotFound`` -- ``assessment_taken_id`` is not found
        :raise: ``NullArgument`` -- ``assessment_taken_id`` is ``null``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``PermissionDenied`` -- authorization failure occurred

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