public static T InstanceCustomCtor(Func <T> ctor)
{
if (ctor == null)
{
throw new ArgumentException("You must provide a valid constructor");
}
if (SingletonCreator._instance == null)
{
lock (_lock)
{
if (SingletonCreator._instance == null)
{
SingletonCreator.Initialize(ctor);
}
}
}
return(SingletonCreator._instance);
}