{"ast_node_type":"other","tokens":[{"end":75,"kind":"keyword","start":0,"text":"Some(TtElement::Leaf(tt::Leaf::Ident(ident)))"}]}
        Some(TtElement::Leaf(tt::Leaf::Ident(ident))) => ident.sym.clone(),
        None => return None,
        Some(_) => return Some(CfgExpr::Invalid),