code: def add_node(self, binary_descriptor):
          
  
          try:
              node_string = parse_binary_descriptor(binary_descriptor)
          except:
              self._logger.exception("Error parsing binary node descriptor: %s", binary_descriptor)
              return _pack_sgerror(SensorGraphError.INVALID_NODE_STREAM)  # FIXME: Actually provide the correct error codes here
  
          try:
              self.graph.add_node(node_string)
          except NodeConnectionError:
              return _pack_sgerror(SensorGraphError.STREAM_NOT_IN_USE)
          except ProcessingFunctionError:
              return _pack_sgerror(SensorGraphError.INVALID_PROCESSING_FUNCTION)
          except ResourceUsageError:
              return _pack_sgerror(SensorGraphError.NO_NODE_SPACE_AVAILABLE)
  
          return Error.NO_ERROR
docs: Add a node to the sensor_graph using a binary node descriptor.
  
          Args:
              binary_descriptor (bytes): An encoded binary node descriptor.
  
          Returns:
              int: A packed error code.