Assert.assertTrue(firstOut instanceof ExtensionStack);
ExtensionStack extensionStack = (ExtensionStack)firstOut;
Assert.assertTrue(extensionStack.isRunning());
OutgoingFrames secondOut = extensionStack.getNextOutgoing();
Assert.assertTrue(secondOut instanceof DeflateFrameExtension);
DeflateFrameExtension deflateExtension = (DeflateFrameExtension)secondOut;
Assert.assertTrue(deflateExtension.isRunning());
OutgoingFrames thirdOut = deflateExtension.getNextOutgoing();
Assert.assertTrue(thirdOut instanceof WebSocketClientConnection);
final CountDownLatch latch = new CountDownLatch(1);
session.getAsyncRemote().sendText(content, new SendHandler()
{