{"ast_node_type":"other","tokens":[{"end":69,"kind":"keyword","start":0,"text":"($span:ident"}]}
    ($span:ident $builder:ident # # $first:ident $($tail:tt)* ) => {{
        ::std::iter::IntoIterator::into_iter($first).for_each(|it| $crate::builtin::quote::ToTokenTree::to_tokens(it, $span, $builder));