class_docstr: Represents a single transform function in a MapTransformer.
class_docstr_tok: ["Represents","a","single","transform","function","in","a","MapTransformer","."]
code: def set_target_max_block_size(self, target_max_block_size: int):
      self._target_max_block_size = target_max_block_size
  
imports: import itertools
  from abc import abstractmethod
  from enum import Enum
  from typing import Any, Callable, Dict, Iterable, List, Optional, TypeVar, Union
  from ray.data._internal.block_batching.block_batching import batch_blocks
  from ray.data._internal.execution.interfaces.task_context import TaskContext
  from ray.data._internal.output_buffer import BlockOutputBuffer
  from ray.data.block import Block, BlockAccessor, DataBatch
label_desc: Use image node_id 5 for calling the MapTransformFn obj's underlying member method code with example usage: obj.set_target_max_block_size(target_max_block_size) without return types