public TypeConstructor(Type concreteType = null, Action <T> initializer = null)
{
this.initializer = initializer;
ReferenceType = typeof(T);
ConcreteType = concreteType ?? ReferenceType;
if (ReferenceType != ConcreteType && !ReferenceType.IsAssignableFrom(ConcreteType))
{
throw new InvalidOperationException($"{ReferenceType.Name} cannot be used as a reference type for concrete type {ConcreteType.Name}");
}
}