pub fn prune_additional_cols(
chunk: &StreamChunk,
split_idx: usize,
offset_idx: usize,
column_descs: &[SourceColumnDesc],
) -> StreamChunkpub fn prune_additional_cols(
chunk: &StreamChunk,
split_idx: usize,
offset_idx: usize,
column_descs: &[SourceColumnDesc],
) -> StreamChunk