docs: def post_refresh_system_metadata(request):
      """MNStorage.systemMetadataChanged(session, did, serialVersion,
      dateSysMetaLastModified) → boolean."""
      d1_gmn.app.views.assert_db.post_has_mime_parts(
          request,
          (
              ('field', 'pid'),
              ('field', 'serialVersion'),
              ('field', 'dateSysMetaLastModified'),
          ),
      )
      d1_gmn.app.views.assert_db.is_existing_object(request.POST['pid'])
      d1_gmn.app.models.sysmeta_refresh_queue(
          request.POST['pid'],
          request.POST['serialVersion'],
          request.POST['dateSysMetaLastModified'],
          'queued',
      ).save()
      return d1_gmn.app.views.util.http_response_with_boolean_true_type()