code: def fetch_data(self):
          
          # Get http session
          yield from self._get_httpsession()
          # Post login page
          yield from self._post_login_page()
          # Get token
          token_uuid = yield from self._get_token()
          # Get account number
          account_number = yield from self._get_account_number(*token_uuid)
          # List phone numbers
          self._phone_numbers = yield from self._list_phone_numbers(account_number)
          # Get balance
          balance = yield from self._get_balance(account_number)
          self._data['balance'] = balance
          # Get fido dollar
          for number in self._phone_numbers:
              fido_dollar = yield from self._get_fido_dollar(account_number,
                                                             number)
              self._data[number]= {'fido_dollar': fido_dollar}
          # Get usage
          for number in self._phone_numbers:
              usage = yield from self._get_usage(account_number, number)
              self._data[number].update(usage)
docs: Fetch the latest data from Fido.