code: def init_minio_client(self, minio_host):
      Path("/tmp/bulk_insert_data").mkdir(parents=True, exist_ok=True)
      self._connect()
      self.milvus_sys = MilvusSys(alias="default")
      ms = MilvusSys()
      minio_port = "9000"
      self.minio_endpoint = f"{minio_host}:{minio_port}"
      self.bucket_name = ms.index_nodes[0]["infos"][
          "system_configurations"
      ]["minio_bucket_name"]
  
imports: import logging
  import time
  import pytest
  from pymilvus import DataType
  import numpy
  from pathlib import Path
  from base.client_base import TestcaseBase
  from common import common_func
  from common import common_type
  from common.milvus_sys import MilvusSys
  from common.common_type import CaseLabel, CheckTasks
  from utils.util_log import test_log
  from common.bulk_insert_data import prepare_bulk_insert_json_files, prepare_bulk_insert_new_json_files, prepare_bulk_insert_numpy_files, prepare_bulk_insert_parquet_files, prepare_bulk_insert_csv_files, DataField
label_desc: Use image node_id 1 for calling the TestcaseBaseBulkInsert obj's underlying member method code with example usage: obj.init_minio_client(minio_host) without return types