@Pavel, Marek: do you have any concerns about using maven-shade-plugin to integrate Guava library into richfaces.jar?

I think the problem we faced in RF 4.3 in WFK was about usage of Shade Transformers (that we do not use in RF5), but I don't recall the problem specifically.

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@Pavol: Shading of Guava in 5.0 applies to 4.5 as well.

I don't think we should back-port it to 4.3, at least not at this point.