public void UseFactorySinksProvider()
{
_mockSink.Setup(m => m.Sink(It.IsAny <DelegateProvider <object> >())).Verifiable();
_instanceUnderTest.UseFactory(() => new object());
_mockSink.Verify(m => m.Sink(It.IsAny <DelegateProvider <object> >()), Times.Once);
}