docs: def get_first_unanswered_question(self, assessment_section_id):
          """Gets the first unanswered question in this assesment section.
  
          arg:    assessment_section_id (osid.id.Id): ``Id`` of the
                  ``AssessmentSection``
          return: (osid.assessment.Question) - the first unanswered
                  question
          raise:  IllegalState - ``has_unanswered_questions()`` is
                  ``false``
          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 occurred
          *compliance: mandatory -- This method must be implemented.*
  
          """
          questions = self.get_unanswered_questions(assessment_section_id)
          if not questions.available():
              raise errors.IllegalState('There are no more unanswered questions available')
          return questions.next()