{"ast_node_type":"impl","tokens":[{"end":83,"kind":"keyword","start":0,"text":"//"}]}
                    // The intent is to treat `impl Trait1 + Trait2` identically to
                if self.visited_opaque_tys.insert(def_id) {
                    // `dyn Trait1 + Trait2`. Therefore we ignore def-id of the opaque type itself