code: def build(opt):
      dpath = os.path.join(opt["datapath"], "ConvAIChitChat")
      version = "1501534800"
  
      if not build_data.built(dpath, version_string=version):
          print("[building data: " + dpath + "]")
  
          if build_data.built(dpath):
              build_data.remove_dir(dpath)
          build_data.make_dir(dpath)
  
          for downloadable_file in RESOURCES:
              downloadable_file.download_file(dpath)
  
          os.rename(
              os.path.join(dpath, "data_train_" + version + ".json"),
              os.path.join(dpath, "train.json"),
          )
          os.rename(
              os.path.join(dpath, "data_test_" + version + ".json"),
              os.path.join(dpath, "test.json"),
          )
  
          build_data.mark_done(dpath, version_string=version)
  
label_desc: Use image node_id 1 for calling a global function with example usage: build(opt) without return types