class_docstr: A MapTransformFn that converts UDF-returned data to output blocks.
class_docstr_tok: ["A","MapTransformFn","that","converts","UDF-returned","data","to","output","blocks","."]
docstr: Return a BuildOutputBlocksMapTransformFn for batch input.
docstr_tok: ["Return","a","BuildOutputBlocksMapTransformFn","for","batch","input","."]
code: def for_batches(cls) -> "BuildOutputBlocksMapTransformFn":
      """Return a BuildOutputBlocksMapTransformFn for batch input."""
      return cls(MapTransformFnDataType.Batch)
  
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 4 for calling the BuildOutputBlocksMapTransformFn obj's underlying member method code with example usage: obj.for_batches(cls) and returns: cls