code: def get_current_value(self, use_cached=False):
          
          current_value = self._get_stream_metadata(use_cached).get("currentValue")
          if current_value:
              return DataPoint.from_json(self, current_value)
          else:
              return None
docs: Return the most recent DataPoint value written to a stream
  
          The current value is the last recorded data point for this stream.
  
          :param bool use_cached: If False, the function will always request the latest from Device Cloud.
              If True, the device will not make a request if it already has cached data.
          :raises devicecloud.DeviceCloudHttpException: in the case of an unexpected http error
          :raises devicecloud.streams.NoSuchStreamException: if this stream has not yet been created
          :return: The most recent value written to this stream (or None if nothing has been written)
          :rtype: :class:`~DataPoint` or None