public void When_AfterMapping_Then_Is_Set_On_Map()
        {
            // Arrange
            var map = new ClassMap(ProjectionType.Create<VehicleFrom, VehicleTo>(), new Mapper());
            var sut = new ClassMapBuilder<VehicleFrom, VehicleTo>(map);
            var flag = false;
            var postMapStep = (Action<VehicleFrom, VehicleTo>) ((_, __) => flag = true);

            // Act
            sut.AfterMapping(postMapStep);
            map.AfterMapping(null, null);

            // Assert
            Assert.IsTrue(flag);
        }