code: function storeToken(credentials, token) {
      fs.writeFile(TOKEN_PATH, JSON.stringify(token));
      console.log('Token stored to ' + TOKEN_PATH);
  
      console.log('Add the following json block to your .juttle/config.{js,json} file:');
      var juttle_config = {
          adapters: {
              "gmail": {
                  "client-credentials": credentials,
                  "oauth2-token": token,
              }
          }
      };
  
      console.log(JSON.stringify(juttle_config, null, 4));
  
      console.log("If you already have a \"adapters\" section, add the \"gmail\" section under the existing \"adapters\" section.");
  }
docs: Store token to disk be used in later program executions.
  
  @param {Object} credentials The authorization client credentials.
  @param {Object} token The token to store to disk.