subscribeToChildren method
Get a value stream that emits service-specific options to send to the client whenever the children under the specified parent change. The emitted options may contain information about what changed. A client that is subscribed to this stream should call getChildren to obtain the changed children.
Implementation
@override
@mustCallSuper
ValueStream<Map<String, dynamic>> subscribeToChildren(String parentMediaId) =>
_inner.subscribeToChildren(parentMediaId);