pub fn transform_upstream<'_async0>(
upstream: BoxedMessageStream,
output_columns: &'_async0 [ColumnDesc],
) -> impl Stream<Item = Result<Message, StreamExecutorError>> + '_async0
pub fn transform_upstream<'_async0>(
upstream: BoxedMessageStream,
output_columns: &'_async0 [ColumnDesc],
) -> impl Stream<Item = Result<Message, StreamExecutorError>> + '_async0