// mocking simple interface with a predefined return value
   var myInterface = Mock.Of<IMyInterface>(x => x.Foo() == "bar");
   Console.WriteLine(myInterface.Foo());
   > "bar"

   // You can also only allow a return value if you pass in a specific object..
   var myObject = new object();
   var myInterface = Mock.Of<IMyInterface>(x => x.Foo(myObject) == "bar");
   Console.WriteLine(myInterface.Foo(null));
   > null
   Console.WriteLine(myInterface.Foo(myObject));
   > "bar"

   // Matchers are avaliable too
   var myInterface = Mock.Of<IMyInterface>(x => x.Foo(It.IsAny<IBaz>(y => y.Baz == "Qux") == "Bar"));
   var baz = new Baz { Baz = "Qux" };
   var baz2 = new Baz { Baz = "Quas" };
   Console.WriteLine(myInterface.Foo(baz));
   > "Bar"
   Console.WriteLine(myInterface.Foo(baz2));
   > null

   // You can also interact with passed parameters by using a slightly more complex syntax
   var mockMyInterface = new Mock<IMyInterface>();
   mockMyInterface.Setup(myInterface => myInterface.Foo(It.IsAny<int>())).Returns<int>(i => i * 2);
   var myInterface = mockMyInterface.Object; // Mock object is exposed through Object property
   Console.WriteLine(myInterface.Foo(42));
   > 84
   Console.WriteLine(myInterface.Foo(3));
   > 6