func (w *watcher) add(port, uuid string, pid int) {
	w.instances[port] = &instance{
		uuid: uuid,
		pid:  pid,
	}
}
// add adds a new instance to the watched pool
add adds a new instance to the watched pool
// add adds a new instance to the watched pool
func (w *watcher) add(port, uuid string, pid int) {
	w.instances[port] = &instance{
		uuid: uuid,
		pid:  pid,
	}
}
func ( w * watcher ) add ( port , uuid string , pid int ) { w . instances [ port ] = & instance { uuid : uuid , pid : pid , } }
add adds a new instance to the watched pool
add adds a new instance to the watched pool