code: protected final boolean callbackCreateOptionsMenu(Menu menu) {
          if (DEBUG) Log.d(TAG, "[callbackCreateOptionsMenu] menu: " + menu);
  
          boolean result = true;
          if (mActivity instanceof OnCreatePanelMenuListener) {
              OnCreatePanelMenuListener listener = (OnCreatePanelMenuListener)mActivity;
              result = listener.onCreatePanelMenu(Window.FEATURE_OPTIONS_PANEL, menu);
          } else if (mActivity instanceof OnCreateOptionsMenuListener) {
              OnCreateOptionsMenuListener listener = (OnCreateOptionsMenuListener)mActivity;
              result = listener.onCreateOptionsMenu(menu);
          }
  
          if (DEBUG) Log.d(TAG, "[callbackCreateOptionsMenu] returning " + result);
          return result;
      }
docs: Internal method to trigger the menu creation process.
  
  @return {@code true} if menu creation should proceed.