code: def merge(self, other_roc):
          
          if other_roc.thresholds.size == self.thresholds.size and np.all(other_roc.thresholds == self.thresholds):
              self.contingency_tables += other_roc.contingency_tables
          else:
              print("Input table thresholds do not match.")
docs: Ingest the values of another DistributedROC object into this one and update the statistics inplace.
  
          Args:
              other_roc: another DistributedROC object.