code: def _notify_trace(self, device_uuid, event_name, trace):
          
  
          if device_uuid not in self._connections:
              self._logger.debug("Dropping trace data for device without an active connection, uuid=0x%X", device_uuid)
              return
  
          conn_data = self._connections[device_uuid]
          last_trace = conn_data['last_trace']
          now = monotonic()
  
          conn_data['trace_accum'] += bytes(trace)
  
          # If we're throttling tracing data, we need to see if we should accumulate this trace or
          # send it now.  We acculumate if we've last sent tracing data less than self.throttle_trace seconds ago
          if last_trace is not None and (now - last_trace) < self.throttle_trace:
              if not conn_data['trace_scheduled']:
                  self._loop.call_later(self.throttle_trace - (now - last_trace), self._send_accum_trace, device_uuid)
                  conn_data['trace_scheduled'] = True
                  self._logger.debug("Deferring trace data due to throttling uuid=0x%X", device_uuid)
          else:
              self._send_accum_trace(device_uuid)
docs: Notify that we have received tracing data from a device.
  
          This routine is called synchronously in the event loop by the DeviceManager