code: public boolean dispatchKeyEvent(KeyEvent event) {
          GVRCursorController controller = getUniqueControllerId(event.getDeviceId());
          if (controller != null) {
              return controller.dispatchKeyEvent(event);
          }
          return false;
      }
docs: Dispatch a {@link KeyEvent} to the {@link GVRInputManager}.
  
  @param event The {@link KeyEvent} to be processed.
  @return <code>true</code> if the {@link KeyEvent} is handled by the
  {@link GVRInputManager}, <code>false</code> otherwise.