All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`onClose(WebSocketClose<T> close)`
`void`	`onMessage(WebSocketMessage<T> frame)`
`T`	`onOpen(WebSocket webSocket)`

T onOpen(WebSocket webSocket)
  throws Exception

void onClose(WebSocketClose<T> close)
      throws Exception

void onMessage(WebSocketMessage<T> frame)
        throws Exception

Interface WebSocketHandler<T>