public void checkForDuplicateMnemonics(int mnemonic, String text) {
    if (mnemonic == 0) return;
    if (myMnemonics == null) myMnemonics = new HashMap<>();
    final String other = myMnemonics.get(mnemonic);
    if (other != null && !other.equals(text)) {
      LOG.error("conflict: multiple components with mnemonic '" + (char)mnemonic + "' seen on '" + text + "' and '" + other + "'");
    }
    myMnemonics.put(mnemonic, text);
  }
public void checkForDuplicateMnemonics(int mnemonic, String text)