Fix failing doctest due to incompatible change between legacy and Node-API backends.
//! cx: &mut impl Context<'a>,
//! object: Handle<'a, JsObject>
//! ) -> JsResult<'a, JsArray> {
+//! # #[cfg(feature = "legacy-runtime")]
+//! # return object.downcast().or_throw(cx);
+//! # #[cfg(feature = "napi-1")]
+//! # return
//! object.downcast(cx).or_throw(cx)
+//! # ;
//! }
//! ```
//!
