{"ast_node_type":"function","tokens":[{"end":58,"kind":"keyword","start":0,"text":"fn"}]}
    fn visit_param(&mut self, param: &'v hir::Param<'v>) {
impl<'v> hir_visit::Visitor<'v> for StatCollector<'v> {
        self.record("Param", Some(param.hir_id), param);