private static void CallInterfaceClassToExample3Output()
{
// creating an instance of Bicycle
// doing some operations
Bicycle bicycle = new Bicycle();
bicycle.ChangeGear(2);
bicycle.SpeedUp(3);
bicycle.ApplyBrakes(1);
Console.WriteLine("Bicycle present state :");
bicycle.printStates();
// creating instance of bike.
Bike bike = new Bike();
bike.ChangeGear(1);
bike.SpeedUp(4);
bike.ApplyBrakes(3);
Console.WriteLine("Bike present state :");
bike.printStates();
}