code: def _process_node(self, entity: EntityType):
      return entity
  
file_path: mars/mars/core/graph/builder/base.py
imports: from abc import ABC, abstractmethod
  from typing import List, Set, Union, Generator
  from ....typing import EntityType
  from ..entity import EntityGraph, TileableGraph, ChunkGraph
label_desc: Use image node_id 2 for calling the AbstractGraphBuilder obj's underlying member method code with example usage: obj._process_node(entity) and returns: entity