[undertow-dev] thread-safety of undertow classes

Hello, is there any documentation on what interfaces are thread-safe and what isn't? As I understand it (please correct me if I'm wrong): 1. HttpServerExchange is not thread-safe (dispatch should be used to serialize access to it); 2. WebSocketChannel is thread-safe, so is it OK to call suspendReceives/resumeReceives from different threads. What about other interfaces? Thanks.