Replace Method duplicate

I would like to announce a bug in the use of the refactoring operation Replace Method duplicate in the following case:

public  <T> T m(V<T> v) {
         return v.visit(this);
    }

    public  <T> T n (V<T> v) {
        return v.visit(this);
    }

I would like to find duplicate for the method m and normally it should be found in the body of n but the operation does not detect it.

Is there some body who know what is the problem here.

Yours Faithfully,