{"ast_node_type":"variable","tokens":[{"end":91,"kind":"keyword","start":0,"text":"&&"}]}
            && let Some(args) = self.fcx.typeck_results.borrow().node_args_opt(expr.hir_id)
            && self.fcx.tcx.trait_of_assoc(def_id).is_some()
            && let self_ty = args.type_at(0)