Boilerplate for making a Unity GameObject a singleton

MonoBehaviourSingleton.cs

/**
 *
 * Boilerplate for making a Unity GameObject a singleton
 * 2019 - Bart van de Sande / Nonline
 *
 */

using UnityEngine;

public class MonoBehaviourSingleton<T> : MonoBehaviour where T : MonoBehaviourSingleton<T>
{
    private static T _instance;

    /// <summary>
    /// Returns if there is an instance of this
    /// </summary>
    public static bool HasInstance => _instance != null;

    /// <summary>
    /// Access the singleton instance, will create one if it doesn't exist yet
    /// </summary>
    public static T Instance
    {
        get
        {
            if (_instance == null)
                new GameObject(typeof(T).Name).AddComponent<T>();
            return _instance;
        }
    }

    protected virtual void Awake()
    {
        if (_instance != null)
        {
            Destroy(this.gameObject);
            return;
        }

        _instance = this as T;
        DontDestroyOnLoad(this.gameObject);
    }

    protected virtual void OnDestroy()
    {
        if (_instance == this)
            _instance = null;
    }
}