code: def reload_glance(self, target_app, slices=None):
          
          glance = AppGlance(
              version=1,
              creation_time=time.time(),
              slices=(slices or [])
          )
          SyncWrapper(self._blobdb.insert, BlobDatabaseID.AppGlance, target_app, glance.serialise()).wait()
docs: Reloads an app's glance. Blocks as long as necessary.
  
          :param target_app: The UUID of the app for which to reload its glance.
          :type target_app: ~uuid.UUID
          :param slices: The slices with which to reload the app's glance.
          :type slices: list[.AppGlanceSlice]