code: def h2odownload_csv():
      """
      Python API test: h2o.download_csv(data, filename)
      """
      training_data = h2o.import_file(
          pyunit_utils.locate("smalldata/logreg/benign.csv")
      )
      try:
          results_dir = pyunit_utils.locate(
              "results"
          )  # find directory path to results folder
          filename = os.path.join(results_dir, "benign.csv")
          h2o.download_csv(training_data, filename)  # save csv
          assert os.path.isfile(
              filename
          ), "h2o.download_csv() command is not working."
      except Exception as e:
          if "File not found" in e.args[0]:
              print(
                  "Directory is not writable.  h2o.download_csv() command is not tested."
              )
          else:
              assert (
                  False
              ), "h2o.download_csvresult() command is not working."
  
label_desc: Use image node_id 1 for calling a global function with example usage: h2odownload_csv() without return types