{"ast_node_type":"other","tokens":[{"end":42,"kind":"keyword","start":0,"text":"associated_ty_id:"}]}
                    associated_ty_id: *id,
                Ok(TyKind::Alias(chalk_ir::AliasTy::Projection(ProjectionTy {
                    substitution: subst.clone().try_fold_with(self, outer_binder)?,