AsyncHTTPConduit does not allow body payloads with "PATCH" method

When using "PATCH" http method using the Async Http Transport, the payload is always null.

After debugging, I saw that AsyncHTTPConduit class does not override the "isChunkingSupported" method. Something like following is needed to be added to this class to allow PATCH call with payload

    protected boolean isChunkingSupported(Message message, String httpMethod) {
        if ("PATCH".equals(httpMethod)) { 
            return true;
        }
        return super.isChunkingSupported(message, httpMethod);
    }

There may be other methods this need to support.