content: import ray
  ray.init()
  @ray.remote
  class Counter(object):
      def __init__(self):
          self.n = 0
  
      def increment(self):
          self.n += 1
  
      def read(self):
          return self.n
  
  counters = [Counter.remote() for i in range(4)]
  [c.increment.remote() for c in counters]
  futures = [c.read.remote() for c in counters]
  print(ray.get(futures))
  
  