* a connection to external subtree source is broken. The listener will not receive any other
* callbacks, but its registration still needs to be closed to prevent resource leak.
*
- * @param cause Collection of failure causes, may not be null or empty.
+ * @param causes Collection of failure causes, may not be null or empty.
*/
void onDataTreeFailed(@Nonnull Collection<DOMDataTreeListeningException> causes);
}