syntax_data: {"ast_node_type":"variable","tokens":[{"end":92,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:         if let LocalInfo::ConstRef { def_id } = *self.body.local_decls[local].local_info() {
context_before:     fn is_const_item(&self, local: Local) -> Option<DefId> {
context_after:             Some(def_id)