syntax_data: {"ast_node_type":"other","tokens":[{"end":96,"kind":"keyword","start":0,"text":"ref"}]}
source_snippet:             ref kind if ExprCategory::of(kind).is_none_or(|cat| cat == ExprCategory::Place) => {
context_before:             ExprKind::Deref { .. } => {}
context_after:                 visit::walk_expr(self, expr);