How to use the fastparquet.writer.make_metadata function in fastparquet

else:
            df = df[pf.columns + partition_on]

        fmd = pf.fmd
        i_offset = fastparquet.writer.find_max_part(fmd.row_groups)

        if not ignore_divisions:
            minmax = fastparquet.api.sorted_partitioned_columns(pf)
            old_end = minmax[index_cols[0]]["max"][-1]
            if divisions[0] < old_end:
                raise ValueError(
                    "Appended divisions overlapping with the previous ones.\n"
                    "Previous: {} | New: {}".format(old_end, divisions[0])
                )
    else:
        fmd = fastparquet.writer.make_metadata(
            df._meta,
            object_encoding=object_encoding,
            index_cols=index_cols,
            ignore_columns=partition_on,
            **kwargs
        )
        i_offset = 0

    filenames = ["part.%i.parquet" % (i + i_offset) for i in range(df.npartitions)]

    write = delayed(_write_partition_fastparquet, pure=False)
    writes = [
        write(part, fs, path, filename, fmd, compression, partition_on)
        for filename, part in zip(filenames, df.to_delayed())
    ]

i_offset = fastparquet.writer.find_max_part(fmd.row_groups)
            if not ignore_divisions:
                if not set(index_cols).intersection([division_info["name"]]):
                    ignore_divisions = True
            if not ignore_divisions:
                minmax = fastparquet.api.sorted_partitioned_columns(pf)
                old_end = minmax[index_cols[0]]["max"][-1]
                divisions = division_info["divisions"]
                if divisions[0] < old_end:
                    raise ValueError(
                        "Appended divisions overlapping with previous ones."
                        "\n"
                        "Previous: {} | New: {}".format(old_end, divisions[0])
                    )
        else:
            fmd = fastparquet.writer.make_metadata(
                df._meta,
                object_encoding=object_encoding,
                index_cols=index_cols,
                ignore_columns=partition_on,
                **kwargs
            )
            i_offset = 0

        return (fmd, i_offset)