orderBy method
Add ordering to the statement
Implementation
C orderBy(ComposableOrdering Function(OS o) o) {
final orderings = o($state.orderingComposer);
return $state._getChildManagerBuilder($state.copyWith(
orderingBuilders:
$state.orderingBuilders.union(orderings.orderingBuilders),
joinBuilders: $state.joinBuilders.union(orderings.joinBuilders)));
}