code: def get_priority(self) -> int:
          
          dtype = self.get_type()
          if dtype & DeltaType.PRE:
              return 1
          elif dtype & DeltaType.POST:
              return 3
          else:
              return 2
docs: Rerturns the priority of the file from 1 (pre) to 3 (post)
          :return: the priority