code: def count(self, collection_name=None):
      if collection_name is None:
          collection_name = self._collection_name
      row_count = self._milvus.get_collection_stats(collection_name)[
          "row_count"
      ]
      logger.debug(
          "Row count: %d in collection: <%s>"
          % (row_count, collection_name)
      )
      return row_count
  
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 27 for calling the MilvusClient obj's underlying member method code with example usage: obj.count(collection_name) and returns: row_count