whole_func_string: function () {
      const url = BASE_URL + '/drive/v2/about?fields=user';
      // requesting user info(mainly for userAdress)
      return this._request('GET', url, {}).then(function (resp){
        try {
          const info = JSON.parse(resp.responseText);
          return Promise.resolve(info);
        } catch (e) {
          return Promise.reject(e);
        }
      });
    }
func_code_string: function () {
      const url = BASE_URL + '/drive/v2/about?fields=user';
      // requesting user info(mainly for userAdress)
      return this._request('GET', url, {}).then(function (resp){
        try {
          const info = JSON.parse(resp.responseText);
          return Promise.resolve(info);
        } catch (e) {
          return Promise.reject(e);
        }
      });
    }
func_documentation_string: Fetch the user's info from Google.
  
  @returns {Promise} resolves with the user's info.
  
  @protected