code: def create_partition(self, tag, collection_name=None):
      if not collection_name:
          collection_name = self._collection_name
      self._milvus.create_partition(collection_name, tag)
  
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 7 for calling the MilvusClient obj's underlying member method code with example usage: obj.create_partition(tag, collection_name) without return types