import std.stdio;

​

void main(string[] args)

{

    inter1 c1 = new foo();

    foo c2 = new foo();

    writeln("Origin=interface: ", c1.strategyName);

    writeln("Origin=class: ", c2.strategyName);

}

​

interface inter1 {

    @property string strategyName() const;

}

​

class foo : inter1 {

    @property string strategyName() const {

        return "foo";

    }

}