*
   * <p><b>Note:</b> this method is now unnecessary and should be treated as deprecated; use {@link
   * Math#addExact(long, long)} instead. Note that if both arguments are {@code int} values, writing
   * {@code Math.addExact(a, b)} will call the {@link Math#addExact(int, int)} overload, not {@link
   * Math#addExact(long, long)}. Also note that adding two {@code int} values can <b>never</b>

   * Math#addExact(int, int)} instead.
   *
   * @throws ArithmeticException if {@code a + b} overflows in signed {@code int} arithmetic
   */
  @InlineMe(replacement = "Math.addExact(a, b)")
  public static int checkedAdd(int a, int b) {
    return Math.addExact(a, b);
  }

  /**

      }

      while (true) {
        int oldValue = existingCounter.get();
        if (oldValue != 0) {
          try {
            int newValue = Math.addExact(oldValue, occurrences);
            if (existingCounter.compareAndSet(oldValue, newValue)) {
              // newValue can't == 0, so no need to check & remove
              return oldValue;
            }

      }

      while (true) {
        int oldValue = existingCounter.get();
        if (oldValue != 0) {
          try {
            int newValue = Math.addExact(oldValue, occurrences);
            if (existingCounter.compareAndSet(oldValue, newValue)) {
              // newValue can't == 0, so no need to check & remove
              return oldValue;
            }