是否可以使用Java 8运行我的Dataflow管道代码？

It turns out that I am not able to run any transformations in my pipeline presumably because Cloud Dataflow currently runs only Java 7. All my pre-existing code that runs in my pipeline relies on Java 8 (can only be built with the Java 8 compiler). Is there any way around it? I saw the Java 7 restriction clearly stated here: It turns out that I am not able to run any tran