public void RequiresNonNullForNonPublicMethodWhenAttributeSpecifiesNonPublic()
        {
            var sample = new ClassWithPrivateMethod();

            Assert.Throws <ArgumentNullException>(() => sample.PublicWrapperOfPrivateMethod());
        }
 public void RequiresNonNullForNonPublicMethodWhenAttributeSpecifiesNonPublic()
 {
     var sample = new ClassWithPrivateMethod();
     Assert.Throws<ArgumentNullException>(() => sample.PublicWrapperOfPrivateMethod());
 }