{"ast_node_type":"other","tokens":[{"end":12,"kind":"keyword","start":0,"text":"//"}]}
    // Ident
    ($span:ident $builder:ident $tt:literal ) => { $crate::builtin::quote::ToTokenTree::to_tokens($tt, $span, $builder) };
    ($span:ident $builder:ident $tt:ident ) => {