docs: def get_token(self):
          """
          Return a string which is a token, needed for some API calls
          :return: Token (can be used with some API call
          :rtype: str
  
          .. todo:: make a token class to be able to store date of expiration
          """
          self.bbox_auth.set_access(BboxConstant.AUTHENTICATION_LEVEL_PRIVATE, BboxConstant.AUTHENTICATION_LEVEL_PRIVATE)
          self.bbox_url.set_api_name(BboxConstant.API_DEVICE, "token")
          api = BboxApiCall(self.bbox_url, BboxConstant.HTTP_METHOD_GET, None,
                            self.bbox_auth)
          resp = api.execute_api_request()
          return resp.json()[0]['device']['token']