code: def _build(self) -> Iterable[Union[TileableGraph, ChunkGraph]]:
      tile_iterator = iter(self.tiler)
      while True:
          try:
              with enter_mode(build=True, kernel=True):
                  graph = next(tile_iterator)
              yield graph
          except StopIteration:
              break
  
imports: import dataclasses
  import functools
  from typing import Callable, Dict, Generator, Iterable, List, Optional, Set, Type, Union
  from ....core import FUSE_CHUNK_TYPE, CHUNK_TYPE, TILEABLE_TYPE
  from ....typing import EntityType, TileableType, ChunkType
  from ....utils import copy_tileables, build_fetch
  from ...entity.tileables import handler
  from ...mode import enter_mode
  from ..entity import TileableGraph, ChunkGraph
  from .base import AbstractGraphBuilder
label_desc: Use image node_id 5 for calling the ChunkGraphBuilder obj's underlying member method code with example usage: obj._build() without return types