code: def build(opt):
      dpath = os.path.join(opt["datapath"], "metalwoz")
      version = "1.0"
  
      if not build_data.built(dpath, version_string=version):
          if build_data.built(dpath):
              build_data.remove_dir(dpath)
          build_data.make_dir(dpath)
          build_data.make_dir(os.path.join(dpath, "train", "dialogues"))
          build_data.make_dir(os.path.join(dpath, "test", "dialogues"))
  
          # Download the data.
          RESOURCES[0].download_file(os.path.join(dpath, "train"))
          RESOURCES[1].download_file(os.path.join(dpath, "test"))
  
          build_data.untar(
              os.path.join(dpath, "test"), "dstc8_metalwoz_heldout.zip"
          )
          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