{"ast_node_type":"other","tokens":[{"end":94,"kind":"keyword","start":0,"text":"ImplItemKind::Const(..)"}]}
            ImplItemKind::Const(..) | ImplItemKind::Type(..) => ParamDefaultPolicy::Forbidden,
            // Re. GATs and GACs (generic_const_items), we're not bound by backward compatibility.
            ImplItemKind::Fn(..) => ParamDefaultPolicy::FutureCompatForbidden,