docs: public boolean syncClonedListener(BaseField field, FieldListener listener, boolean bInitCalled)
      {
          if (!bInitCalled)
              ((ChangeFocusOnChangeHandler)listener).init(null, m_screenField, m_fldTarget);
          bInitCalled = super.syncClonedListener(field, listener, true);
          ((ChangeFocusOnChangeHandler)listener).setChangeFocusIfNull(m_bChangeIfNull);
          return bInitCalled;
      }