T6987475neg.java:27:12: compiler.err.does.not.override.abstract: T6987475neg.Impl1, go(java.lang.String), T6987475neg.Sub
T6987475neg.java:28:12: compiler.err.does.not.override.abstract: T6987475neg.Impl2, go(java.lang.String), T6987475neg.SubReverse
2 errors