def __init__(self,
               combiner,
               is_combining_accumulators):
    """Init method for _CombinerWrapper.

    Args:
      combiner: A `analyzer_nodes.Combiner` object used to combine.
      is_combining_accumulators: A bool which indicates whether this is
        combining single or batched inputs, or already accumulated objects. In
        the former case, output of the CombineFn is an accumulator, whereas
        in the latter case, output is extracted from the combined accumulators
        using the combiner's extract_output.
    """
    self._combiner = combiner
    self._is_combining_accumulators = is_combining_accumulators
Init method for _CombinerWrapper.

    Args:
      combiner: A `analyzer_nodes.Combiner` object used to combine.
      is_combining_accumulators: A bool which indicates whether this is
        combining single or batched inputs, or already accumulated objects. In
        the former case, output of the CombineFn is an accumulator, whereas
        in the latter case, output is extracted from the combined accumulators
        using the combiner's extract_output.
    
tensorflow_transform/beam/analyzer_impls.py