{"ast_node_type":"other","tokens":[{"end":64,"kind":"keyword","start":0,"text":"ConcatMetaVarExprElem::Literal(lit)"}]}
                        ConcatMetaVarExprElem::Literal(lit) => {
                        }
                            // FIXME: This isn't really correct wrt. escaping, but that's what rustc does and anyway