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Do I still need hadoop-aws libs when using Flink 1.5 and Presto?

I am trying to figure out how to use S3 as state storage.
The recommended way is

Seems like I only have to do two things:
1. Put flink-s3-fs-presto to the lib
2. Configure
s3.access-key: your-access-key
s3.secret-key: your-secret-key

But I see this exception: ClassNotFoundException: NativeS3FileSystem/S3AFileSystem Not Found

Add it is suggested to add more libs.
So I am confused here, is there a step 3 needed? Isn't the presto jar is all self contained?