static void Main(string[] args)
{
IMyInterface foo = new MyConcreteClass();
foo.FunctionA();
foo.FunctionB();
foo.FunctionC();
Console.ReadKey();
}
public static string MethodTwo(this MyConcreteClass concreteClass)
{
// add new implementation here
return(concreteClass.PropertyOne + " using extensions");
}
public void MyNewClass(MyConcreteClass concreteClass)
{
_MyConcreteClass = concreteClass;
}