code: def _default_assign_to_partition(
      sliced_record_batch: types.SlicedRecordBatch, num_partitions: int
  ) -> Tuple[Tuple[types.SliceKey, int], pa.RecordBatch]:
      """Assigns an example to a partition key."""
      slice_key, record_batch = sliced_record_batch
      return (
          slice_key,
          np.random.randint(num_partitions),
      ), record_batch
  
imports: import collections
  import functools
  from typing import Dict, Iterable, Text, Tuple
  import apache_beam
  import numpy
  import pyarrow
  from tensorflow_data_validation import constants
  from tensorflow_data_validation import types
  from tensorflow_data_validation.statistics.generators import stats_generator
  from tensorflow_data_validation.utils import stats_util
  from tfx_bsl.arrow import table_util
  from tensorflow_metadata.proto.v0 import statistics_pb2
label_desc: Use image node_id 3 for calling a global function with example usage: _default_assign_to_partition(sliced_record_batch, num_partitions) and returns: slice_key,  np,  record_batch