{"ast_node_type":"other","tokens":[{"end":96,"kind":"keyword","start":0,"text":"fallback:"}]}
            fallback: box TranslateError::One { kind: TranslateErrorKind::Fluent { errs }, .. },
            primary: box TranslateError::One { kind: TranslateErrorKind::PrimaryBundleMissing, .. },
        } = &err