@Override
public Observable<Void> in(ByteBuf request, ByteBuf response) {
inCalled = true;
MockChannelHandlerContext mock = new MockChannelHandlerContext("mock");
wasLastInCallValid = filterKey.apply(request, new KeyEvaluationContext(mock.channel()));
return Observable.empty();
}
@Override
public Observable<Void> out(ByteBuf response) {