Timer with a lambda function execution on timeout for Godot 3

LambdaTimer.cs

using Godot;
using System;

/*
var timer = new LambdaTimer(() => GD.Print("hello timer!"));
AddChild(timer);
*/

public class LambdaTimer : Timer {
	private Action onTimeOutAction { get; }
	private int count;

	public LambdaTimer() {}

	public LambdaTimer(Node parent, float duration = 1f, int count = 1, Action action = null, bool auto_start = true) {
		onTimeOutAction = action;
		this.count = count;
		Autostart = auto_start;
		OneShot = count <= 1;
		WaitTime = duration;
		Connect("timeout", this, nameof(OnTimeOut));
		parent.AddChild(this);
	}

	private void OnTimeOut() {
		onTimeOutAction?.Invoke();
		--count;
		if (!OneShot && count == 0) {
			Stop();
		}
	}
}