{"ast_node_type":"variable","tokens":[{"end":67,"kind":"keyword","start":0,"text":"if"}]}
        if let ty::Alias(ty::Projection, projection_ty) = ty.kind()
    fn fold_ty(&mut self, ty: Ty<'tcx>) -> Ty<'tcx> {
            && let Some(ty::ImplTraitInTraitData::Trait { fn_def_id, .. }) =