Github user afs commented on the pull request: https://github.com/apache/jena/pull/60#issuecomment-101012215 Thrift is another Apache project. In the Thrift case, all Jena adds the `@SuppressWarnings("all")` at the top. As the warnings also depend on the local compiler settings, its hard for a general code generator to generate clean code. From my experience, that's typical for code generators.
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