- * The contents of the document are passed in chunks, so we append to the $body property for temporary storage.
- * Returning a length shorter than the length of $data passed in will cause cURL to abort the request with CURLE_WRITE_ERROR
+ * The contents of the document are passed in chunks, so we append to the `$body`
+ * property for temporary storage. Returning a length shorter than the length of
+ * `$data` passed in will cause cURL to abort the request with `CURLE_WRITE_ERROR`.