def to_h
      stats
      return Hash[
        STATS_METHODS.map do |stat, method_name|
          [stat, stats(false).send(method_name)]
        end
      ]
    end
def to_h
      stats
      return Hash[
        STATS_METHODS.map do |stat, method_name|
          [stat, stats(false).send(method_name)]
        end
      ]
    end
:call-seq:
   to_h() => Hash

 Returns a hash of all tube attributes derived from updated stats

   tube = StalkClimber::Tube.new(connection_pool, 'stalk_climber')
   tube.to_h
     #=> {"cmd-delete"=>100, "cmd-pause-tube"=>101, "current-jobs-buried"=>102, "current-jobs-delayed"=>103, "current-jobs-ready"=>104, "current-jobs-reserved"=>105, "current-jobs-urgent"=>106, "current-using"=>107, "current-waiting"=>108, "current-watching"=>109, "name"=>"stalk_climber", "pause"=>111, "pause-time-left"=>110, "total-jobs"=>112}