import java.util.*; interface C<T> extends List<List<T>>{} abstract class A { abstract <T> T baz(List<? super List<? super T>> a); void bar(C<?> x){ baz<error descr="'baz(java.util.List<? super java.util.List<? super java.lang.Object>>)' in 'A' cannot be applied to '(C<capture<?>>)'">(x)</error>; } }