docs: def comparator(self, x, y):
          '''
          simple comparator method
  
          '''
  
          indX=0
          indY=0
          for i in range(len(self.stable_names)):
              if self.stable_names[i] == x[0].split('-')[0]:
                  indX=i
              if self.stable_names[i] == y[0].split('-')[0]:
                  indY=i
  
          if indX>indY:
              return 1
          if indX==indY:
              return 0
          if indX<indY:
              return -1