fn plan_map(
ecx: &ExprContext<'_>,
entries: &[MapEntry<Aug>],
type_hint: Option<&ScalarType>,
) -> Result<CoercibleScalarExpr, PlanError>
fn plan_map(
ecx: &ExprContext<'_>,
entries: &[MapEntry<Aug>],
type_hint: Option<&ScalarType>,
) -> Result<CoercibleScalarExpr, PlanError>