docs: def set_assessment(self, assessment_id):
          """Sets the assessment.
  
          arg:    assessment_id (osid.id.Id): the new assessment
          raise:  InvalidArgument - ``assessment_id`` is invalid
          raise:  NoAccess - ``assessment_id`` cannot be modified
          raise:  NullArgument - ``assessment_id`` is ``null``
          *compliance: mandatory -- This method must be implemented.*
  
          """
          # Implemented from template for osid.resource.ResourceForm.set_avatar_template
          if self.get_assessment_metadata().is_read_only():
              raise errors.NoAccess()
          if not self._is_valid_id(assessment_id):
              raise errors.InvalidArgument()
          self._my_map['assessmentId'] = str(assessment_id)