Elisa/Elisa.Common/Utils/Singleton.cs

namespace Elisa.Common.Utils;

public abstract class Singleton<T> where T : new()
{
    static T instance;
    public static T Instance
    {
        get
        {
            if (instance == null)
                instance = new T();

            return instance;
        }
        set => instance = value;
    }
}