}
  }

  /** Identifies all enterXxx and tryEnterXxx methods. */
  private static boolean isAnyEnter(Method method) {
    return method.getName().startsWith("enter") || method.getName().startsWith("tryEnter");
  }

  /** Identifies just tryEnterXxx methods (a subset of {@link #isAnyEnter}), which never block. */
  private static boolean isTryEnter(Method method) {
    return method.getName().startsWith("tryEnter");