docs: public static boolean isSimpleName(String name) {
      if (name == null || name.isEmpty()) {
        return false;
      }
      if (!Character.isJavaIdentifierStart(name.charAt(0))) {
        return false;
      }
      int len = name.length();
      for (int i = 1; i < len; ++i) {
        if (!Character.isJavaIdentifierPart(name.charAt(i))) {
          return false;
        }
      }
      return true;
    }