code: def count(self, name):
      if self._sidecar.is_active:
          counter = Counter(name)
          counter.increment()
          payload = {"counter": counter.serialize()}
          msg = Message(MessageTypes.BEST_EFFORT, payload)
          yield
          self._sidecar.send(msg)
      else:
          yield
  
imports: import time
  from contextlib import contextmanager
  from metaflow.sidecar import Message, MessageTypes, Sidecar
label_desc: Use image node_id 5 for calling the NullMonitor obj's underlying member method code with example usage: obj.count(name) without return types