@abc.abstractmethod<EOL><INDENT>def get_responses(self, assessment_section_id):<DEDENT>
return<EOL>
Gets all submitted responses.

        :param assessment_section_id: ``Id`` of the ``AssessmentSection``
        :type assessment_section_id: ``osid.id.Id``
        :return: the list of responses
        :rtype: ``osid.assessment.ResponseList``
        :raise: ``IllegalState`` -- ``has_assessment_section_begun()`` is ``false or is_assessment_section_over()`` is ``true``
        :raise: ``NotFound`` -- ``assessment_section_id`` is not found
        :raise: ``NullArgument`` -- ``assessment_section_id`` is ``null``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``PermissionDenied`` -- authorization failure

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