return interruptible ? "enterIfInterruptibly" : "enterIf";
  }

  private String tryEnterIf() {
    return "tryEnterIf";
  }

  private String enterWhen() {
    return interruptible ? "enterWhen" : "enterWhenUninterruptibly";
  }

  private String waitFor() {
    return interruptible ? "waitFor" : "waitForUninterruptibly";
  }

  private String leave() {
    return "leave";
  }