Someone know how can I implement a REST Web Service with webMathematica?

The SOAP service is well documented here and in the webMathematica User Guide.

I saw that is possible to create a REST service in the User Guide (page 10) and in the webMathematica page:

I didn't find any documentation about it. Some Idea? Tks in advance.

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PS: The actual SOAP implementation uses WSDL 1.1. It's very old and incompatible with most modern Web Servers, would be nice to have 2.0 implementation in next webMathematica version for Mathematica V10 and in Mathematica too. Details here.