public @Nullable
  Map<KeyStroke, String> createKeystroke2SysShortcutMap() {
    if (myKeyStroke2SysShortcut.isEmpty()) {
      return null;
    }

    final Map<KeyStroke, String> result = new HashMap<>();
    myKeyStroke2SysShortcut.forEach((ks, sysks) -> result.put(ks, getDescription(sysks)));
    return result;
  }
public @Nullable
  Map<KeyStroke, String> createKeystroke2SysShortcutMap()