public final void setReadOnlyMap(KeyIntMap readOnlyMap, boolean clear) {
    if (!(readOnlyMap instanceof LocalNameQualifiedNamesMap)) {
      throw new IllegalArgumentException(
          CommonResourceBundle.getInstance()
              .getString("message.illegalClass", new Object[] {readOnlyMap}));
    }

    setReadOnlyMap((LocalNameQualifiedNamesMap) readOnlyMap, clear);
  }