public function notify(ProcessInterface $process, ProcessInterface $sender)
 {
     // If process hasn't already been notified, do it now
     if (!in_array($process->getName(), $this->notifiedProcesses)) {
         $this->notifiedProcesses[] = $process->getName();
         $process->emit(ProcessInterface::EVENT_ERROR, array($sender));
     }
 }
 public function equals(ProcessInterface $process)
 {
     return $process->getName() === $this->name;
 }