Sounds OK to me. I don't know of anyone implementing HttpMethod directly, though it's a valid concern.
I assume this means that for everything but POST, the setParameter/addParameter/removeParameter methods will modify the query string, (and hence shouldn't be used in conjunction with setQueryString) while POST will continue to use these methods to modify the request body? Perhaps distinct setParameter/addParameter/removeParameter methods for the query string and the body? - Rod
