docs: public static boolean isJavaIdentifier(String name) {
          if (name.length() == 0 || INVALID_JAVA_IDENTIFIERS.contains(name)) return false;
          char[] chars = name.toCharArray();
          if (!Character.isJavaIdentifierStart(chars[0])) return false;
          for (int i = 1; i < chars.length; i++ ) {
              if (!Character.isJavaIdentifierPart(chars[i])) return false;
          }
          return true;
      }