public void UseInstanceSinksProvider()
{
var instance = new object();
_mockSink.Setup(m => m.Sink(It.IsAny <InstanceProvider <object> >())).Verifiable();
_instanceUnderTest.UseInstance(new object());
_mockSink.Verify(m => m.Sink(It.IsAny <InstanceProvider <object> >()), Times.Once);
}