docs: def get_trend(self):
          """
          Get the trend for the last two metric values using the interval defined in the metric
  
          :return: a tuple with the metric value for the last interval and the
                   trend percentage between the last two intervals
          """
          """  """
  
          # TODO: We just need the last two periods, not the full ts
          ts = self.get_ts()
          last = ts['value'][len(ts['value']) - 1]
          prev = ts['value'][len(ts['value']) - 2]
  
          trend = last - prev
          trend_percentage = None
          if last == 0:
              if prev > 0:
                  trend_percentage = -100
              else:
                  trend_percentage = 0
          else:
              trend_percentage = int((trend / last) * 100)
  
          return (last, trend_percentage)