class_docstr: run build
code: def prepare(self, **case_param):
      collection_name = case_param["collection_name"]
      self.milvus.set_collection(collection_name)
      if not self.milvus.exists_collection():
          logger.info("collection not exist")
      logger.debug({"collection count": self.milvus.count()})
  
file_path: milvus/tests/benchmark/milvus_benchmark/runners/build.py
imports: import time
  import copy
  import logging
  from milvus_benchmark import parser
  from milvus_benchmark.runners import utils
  from milvus_benchmark.runners.base import BaseRunner
label_desc: Use image node_id 3 for calling the BuildRunner obj's underlying member method code with example usage: obj.prepare() without return types