{"ast_node_type":"variable","tokens":[{"end":39,"kind":"keyword","start":0,"text":"let"}]}
        let layout = self.layout(&ty)?;
    fn compute_discriminant(&self, ty: Ty, bytes: &[u8]) -> Result<i128> {
        let &TyKind::Adt(chalk_ir::AdtId(AdtId::EnumId(e)), _) = ty.kind(Interner) else {