syntax_data: {"ast_node_type":"other","tokens":[{"end":53,"kind":"keyword","start":0,"text":"debug_assert!(pos"}]}
source_snippet:                 debug_assert!(pos != Position::Only);
context_before:             for (pos, sub_branch) in branch.sub_branches.into_iter().rev().with_position() {
context_after:                 let schedule_drops =