code: def ca_id(self, ca_id):
          
          if ca_id is not None and len(ca_id) > 500:
              raise ValueError("Invalid value for `ca_id`, length must be less than or equal to `500`")
  
          self._ca_id = ca_id
docs: Sets the ca_id of this DeviceData.
          The certificate issuer's ID.
  
          :param ca_id: The ca_id of this DeviceData.
          :type: str