code: def start_process(self, key):
          
          if key in self.processes and key in self.paused:
              os.killpg(os.getpgid(self.processes[key].pid), signal.SIGCONT)
              self.queue[key]['status'] = 'running'
              self.paused.remove(key)
              return True
          elif key not in self.processes:
              if self.queue[key]['status'] in ['queued', 'stashed']:
                  self.spawn_new(key)
                  return True
  
          return False
docs: Start a specific processes.