{"ast_node_type":"other","tokens":[{"end":45,"kind":"keyword","start":0,"text":"_span:"}]}
    _span: crate::tt::Punct => self { self };
    _span: crate::tt::Ident => self { self };
    span: &str => self { crate::tt::Literal{symbol: Symbol::intern(&self.escape_default().to_smolstr()), span, kind: tt::LitKind::Str, suffix: None }};