/*

		<i>A
	<i>B	<i>C
		 D
*/

interface A{
	fooA();
}

interface B extends A{
	fooB();
}

interface C extends A{}

class D implements B,C {
	fooA() {
	}
	fooB() {
	}
}

public class TestInheritanceCircle{

	public m1(x) {
		x.fooA();
		/*return x;*/
	}
	
	public m2(x) {
		x.fooB();
		/*return x;*/
	}
	public m3(D x) {
		x.fooA();
		return x;
	}

}