BDDfy examples feature usage

ExampleFeatures.cs

 public class ExamplesUsage
    {
        private Int32 _initial;
        private Int32 _eat;

        [Given("Given there are <initial> cucumbers")]
        private void Given(Int32 initial)
        {
            _initial = initial;
        }

        [Given("When I eat <eat> of them")]
        private void When(Int32 eat)
        {
            _eat = eat;
        }

        [Then("When I should have <left> left")]
        private void Then(Int32 left)
        {
            (_initial - _eat).ShouldBe(left);
        }

        [TestCase]
        public void Execute()
        {
            this.WithExamples(
                new ExampleTable("initial", "eat", "left")
                {
                    {12, 5, 7},
                    {20, 5, 15}
                }).BDDfy();
        }
    }