Polymorphism

Override a method from the Parent class and then overload it.

Overriden method should return such text: "This is the overriden method!"

The overloaded method should take a parameter of type int named parameter and return the following text:

"This is the overloaded method with int parameter: " + parameter;

(Note that the method should return this text, not display it on the screen)

Warning
Please do not modify the Parent class!