{"ast_node_type":"variable","tokens":[{"end":68,"kind":"keyword","start":0,"text":"let"}]}
    let ty = TyKind::Adt(crate::AdtId(adt), subst).intern(Interner);
    let subst = generics.bound_vars_subst(db, DebruijnIndex::INNERMOST);
    make_binders(db, &generics, ty)