def version
      v = KJess::Request::Version.new
      r = send_recv( v )
      return r.version if Response::Version === r
      raise KJess::ProtocolError, "Unexpected Response from VERSION command"
    end
def version
      v = KJess::Request::Version.new
      r = send_recv( v )
      return r.version if Response::Version === r
      raise KJess::ProtocolError, "Unexpected Response from VERSION command"
    end
Public: Return the version of the Kestrel Server.

 Return a string
 Raise Exception if there is a