public virtual void Ctor_NoArgsBecomesNullUnwrappedObject()
        {
            sut = new WrapperBaseImpl();

            sut.IsNull.ShouldBeTrue();
        }
        public virtual void Ctor_IsNullShouldBeFalse()
        {
            sut = new WrapperBaseImpl(unwrappedObject);

            sut.IsNull.ShouldBeFalse();
        }
        public virtual void Ctor_ArgBecomesUnwrappedObject()
        {
            sut = new WrapperBaseImpl(unwrappedObject);

            sut.UnwrappedObject.ShouldBe(unwrappedObject);
        }