pub fn parse_flat_grouping_exprs(
producer: &mut impl SubstraitProducer,
exprs: &[Expr],
schema: &DFSchemaRef,
ref_group_exprs: &mut Vec<Expression>,
) -> Result<Grouping>
pub fn parse_flat_grouping_exprs(
producer: &mut impl SubstraitProducer,
exprs: &[Expr],
schema: &DFSchemaRef,
ref_group_exprs: &mut Vec<Expression>,
) -> Result<Grouping>