Method combine

dask/dataframe/dask_expr/_reductions.py:1113–1115

(cls, inputs: list, **kwargs)

    @classmethod
    def combine(cls, inputs: list, **kwargs):  # type: ignore
        func = cls.reduction_combine or cls.reduction_aggregate or cls.reduction_chunk
        return func(inputs, **kwargs)  # type: ignore

    @classmethod
    def aggregate(cls, inputs, meta, index, **kwargs):