docstr: only support "in" in expr 
docstr_tok: ["only","support","``","in","''","in","expr"]
code: def get(self, ids, collection_name=None, timeout=None):
      """only support "in" in expr"""
      tmp_collection_name = (
          self._collection_name
          if collection_name is None
          else collection_name
      )
      # res = self._milvus.get(tmp_collection_name, ids, output_fields=None, partition_names=None)
      ids_expr = "id in %s" % (str(ids))
      res = self._milvus.query(
          tmp_collection_name,
          ids_expr,
          output_fields=None,
          partition_names=None,
          timeout=timeout,
      )
      return res
  
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 17 for calling the MilvusClient obj's underlying member method code with example usage: obj.get(ids, collection_name, timeout) and returns: res