syntax_data: {"ast_node_type":"other","tokens":[{"end":40,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:     // Extract `sub` in `binding @ sub`.
context_before: fn check_borrow_conflicts_in_at_patterns<'tcx>(cx: &MatchVisitor<'_, 'tcx>, pat: &Pat<'tcx>) {
context_after:     let PatKind::Binding { name, mode, ty, subpattern: Some(box ref sub), .. } = pat.kind else {