code: def set_deadline(self, end):
          
          # Implemented from template for osid.assessment.AssessmentOfferedForm.set_start_time_template
          if self.get_deadline_metadata().is_read_only():
              raise errors.NoAccess()
          if not self._is_valid_timestamp(
                  end,
                  self.get_deadline_metadata()):
              raise errors.InvalidArgument()
          self._my_map['deadline'] = end
docs: Sets the assessment end time.
  
          arg:    end (timestamp): assessment end time
          raise:  InvalidArgument - ``end`` is invalid
          raise:  NoAccess - ``Metadata.isReadOnly()`` is ``true``
          *compliance: mandatory -- This method must be implemented.*