Are there some instructions on how to use pyflink, but hit a breakpoint in Java code? I have some configuration problem, probably, that prevents creating `FileSystemFactory`s, and if I could debug what goes on in

FileSystem.init()

, I'm pretty sure I could easily see it. Alternatively if someone could tell how to configure s3 filesystem using

flink-s3-fs-hadoop

, it would also solve the issue.