code: def reduce_objects(self, series, reduce_fn):
      return series.reduction(
          reduce_fn, aggregate=reduce_fn, meta=("data", "object")
      ).compute()[0]
  
imports: import collections
  import logging
  from contextlib import contextmanager
  from typing import Dict
  import dask
  import dask.array
  import dask.dataframe
  import ray
  from dask.diagnostics import ProgressBar
  from packaging import version
  from pyarrow.fs import FSSpecHandler, PyFileSystem
  from ray.data import Dataset, read_parquet
  from ludwig.api_annotations import DeveloperAPI
  from ludwig.data.dataframe.base import DataFrameEngine
  from ludwig.utils.data_utils import get_pa_schema, get_parquet_filename, split_by_slices
  from ludwig.utils.dataframe_utils import set_index_name
  from ludwig.utils.fs_utils import get_fs_and_path
label_desc: Use image node_id 13 for calling the DaskEngine obj's underlying member method code with example usage: obj.reduce_objects(series, reduce_fn) and returns: series