public ImmutableTestClass(string stringProperty, string firstName, string lastName, int integerProperty, ImmutableTestClass referenceProperty, IList <ImmutableTestClass> listProperty)
{
StringProperty = stringProperty;
FirstName = firstName;
LastName = lastName;
IntegerProperty = integerProperty;
ReferenceProperty = referenceProperty;
ListProperty = listProperty;
}
public WhenBuildingTheObject()
{
_result = Sut.build();
}