resteasy/Resteasy — pull request #550 by liweinan (2014-08-15 09:18:10+00:00)
Title: RESTEASY-838 Add JSON MIME type to @Formatted to "pretty" print JSON output

https://issues.jboss.org/browse/RESTEASY-838

I'm not sure whether a separate @Formatted annotation for Jackson or shared @Formatted with JAXB is preferred. Currently it's separated.