{"ast_node_type":"variable","tokens":[{"end":58,"kind":"keyword","start":0,"text":"if"}]}
        if let ty::Alias(ty::Projection, proj) = ty.kind()
    fn fold_ty(&mut self, ty: Ty<'tcx>) -> Ty<'tcx> {
            && self.cx().is_impl_trait_in_trait(proj.def_id)