{"ast_node_type":"variable","tokens":[{"end":39,"kind":"keyword","start":0,"text":"let"}]}
    let (prefix, suffix) = match kind {
        expansion.replace("$crate", DOLLAR_CRATE_REPLACE).replace("builtin #", BUILTIN_REPLACE);
        SyntaxKind::MACRO_PAT => ("fn __(", ": u32);"),