{"ast_node_type":"other","tokens":[{"end":99,"kind":"keyword","start":0,"text":"ty::ConstKind::Value(cv)"}]}
                ty::ConstKind::Value(cv) if cv.ty.is_primitive() => Some(cv.valtree.unwrap_leaf()),
            Const::Ty(_, c) => match c.kind() {
                _ => None,