code: def collection_name(self):
      return self._collection_name
  
imports: import random
  import logging
  import time
  from multiprocessing import Process
  from pymilvus import Milvus, DataType
  import utils
  import config
  from milvus_benchmark.runners import utils
label_desc: Use image node_id 5 for calling the MilvusClient obj's underlying member method code with example usage: obj.collection_name() and returns: self