docs: def getStringPartition(self):
          """
          Get the string representation of the current partition
          @return string like ":-1,0:2"
          """
          res = ''
          for s in self.partitions[self.index].getSlice():
              start = ''
              stop = ''
              if s.start is not None:
                  start = int(s.start)
              if s.stop is not None:
                  stop = int(s.stop)
              res += '{0}:{1},'.format(start, stop)
          return res