def stats(force_refresh = true)
      if force_refresh || @stats.nil?
        stats = transmit_to_all("stats-tube #{name}", :merge => true)[:body]
        @stats = Beaneater::StatStruct.from_hash(stats)
      end
      return @stats
    end
def stats(force_refresh = true)
      if force_refresh || @stats.nil?
        stats = transmit_to_all("stats-tube #{name}", :merge => true)[:body]
        @stats = Beaneater::StatStruct.from_hash(stats)
      end
      return @stats
    end
:call-seq:
   stats(force_refresh = true) => Beaneater::StatStruct

 Returns related stats for this tube.

   @tube.stats.current_jobs_delayed
     #=> 3