fns = append(fns, cs[idx].handler)
		}
	}

	return
}

func removeCallbacks(cs []*callback, nameMap map[string]bool) []*callback {
	callbacks := make([]*callback, 0, len(cs))
	for _, callback := range cs {
		if nameMap[callback.name] {
			continue
		}
		callbacks = append(callbacks, callback)
	}
	return callbacks

        ArgumentCaptor<String> nameCap = ArgumentCaptor.forClass(String.class);
        ArgumentCaptor<String> hostCap = ArgumentCaptor.forClass(String.class);
        ArgumentCaptor<String> domCap = ArgumentCaptor.forClass(String.class);
        ArgumentCaptor<Integer> rnCap = ArgumentCaptor.forClass(Integer.class);