import com.sun.xml.internal.ws.api.server.AsyncProviderCallback; //导入依赖的package包/类
public @NotNull NextAction processRequest(@NotNull Packet request) {
    T param = argsBuilder.getParameter(request);
    AsyncProviderCallback callback = new AsyncProviderInvokerTube.AsyncProviderCallbackImpl(request);
    AsyncWebServiceContext ctxt = new AsyncWebServiceContext(getEndpoint(),request);

    AsyncProviderInvokerTube.LOGGER.fine("Invoking AsyncProvider Endpoint");
    try {
        getInvoker(request).invokeAsyncProvider(request, param, callback, ctxt);
    } catch(Exception e) {
        LOGGER.log(Level.SEVERE, e.getMessage(), e);
        return doThrow(e);
    }
    // Suspend the Fiber. AsyncProviderCallback will resume the Fiber after
    // it receives response.
    return doSuspend();
}