{"ast_node_type":"function","tokens":[{"end":90,"kind":"keyword","start":0,"text":"pub(crate)"}]}
pub(crate) fn check_zero_tts(cx: &ExtCtxt<'_>, span: Span, tts: TokenStream, name: &str) {
/// (this should be done as rarely as possible).
    if !tts.is_empty() {