### Question:
AbstractWebSocket { protected static String getStreamFromOpenElement(String openElement) { String streamElement = openElement.replaceFirst("\\A<open ", "<stream ") .replace("urn:ietf:params:xml:ns:xmpp-framing", "jabber:client") .replaceFirst("/>\\s*\\z", ">"); return streamElement; }  abstract void connect(WebSocketRemoteConnectionEndpoint endpoint); abstract void send(TopLevelStreamElement element); abstract void disconnect(int code, String message); abstract boolean isConnectionSecure(); abstract SSLSession getSSLSession(); abstract boolean isConnected();  }### Answer:
@Test public void getStreamFromOpenElementTest() { String generatedOpenStream = AbstractWebSocket.getStreamFromOpenElement(OPEN_ELEMENT); assertEquals(generatedOpenStream, OPEN_STREAM); }