Superinterface.this.method()

[bitter_fox]

interface A
{
    public void a() default
    {
        System.out.println("A");
    }
}

class B implements A
{
    public void a()
    {
        A.this.a(); // "A" or StackOverflowError?
    }
}

I can compile this.(Revision is 1245)
Should "A.this.a()" be permitted?

If it should be permitted, does it mean "this.a()"?
(If "A.this.a()" would mean "this.a()", "Superinterface.this.method()" is
very unnecessary and misleading. Isn't it?)

Was this already discussed?

Thanks,
bitter_fox