It's not clear at the moment that the extension Swagger requires version 2.2.4 of Jackson. If the application uses another Jackson version, there are side effects. This should be explicitly described within the readme of the extension.
See this StackOverflow question : http://stackoverflow.com/questions/29319076/guide-to-use-restlet-swagger-extension-for-gae/
It's not clear at the moment that the extension Swagger requires version 2.2.4 of Jackson. If the application uses another Jackson version, there are side effects. This should be explicitly described within the readme of the extension.
See this StackOverflow question : http://stackoverflow.com/questions/29319076/guide-to-use-restlet-swagger-extension-for-gae/