code: def __init__(self, broker_addr, index):
      self.rpc = moolib.Rpc()
      self.name = "client %d" % index
      self.rpc.set_name(self.name)
      self.rpc.set_timeout(2)
      self.rpc.define("hello", self.hello)
      self.rpc.connect(broker_addr)
      self.group = None
      self.index = index
  
imports: import moolib
  import time
label_desc: Use image node_id 1 to create a new Client object  with example: obj = Client(broker_addr, index)