code: def stash_files(self):
      self._credentials = utils.load_json_dict(files.CREDENTIALS_FILE)
      self._config = utils.load_json_dict(files.CONFIG_FILE)
  
file_path: plotly.py/packages/python/chart-studio/chart_studio/tests/utils.py
imports: import copy
  from unittest import TestCase
  from chart_studio import session, files, utils
  from plotly.files import ensure_writable_plotly_dir
label_desc: Use image node_id 5 for calling the PlotlyTestCase obj's underlying member method code with example usage: obj.stash_files() without return types