{"ast_node_type":"other","tokens":[{"end":27,"kind":"keyword","start":0,"text":"match"}]}
        match &args.0[..] {
    pub fn try_new(def_id: TraitDef, args: GenericArgs) -> Result<TraitRef, ()> {
            [GenericArgKind::Type(_), ..] => Ok(TraitRef { def_id, args }),