code: def merge(self, others, merge_conditions, common_ancestor=None):
          
          merging_occurred = False
  
          for o in others:
              for region_id, region in o._regions.items():
                  if region_id in self._regions:
                      merging_occurred |= self._regions[region_id].merge(
                          [region], merge_conditions, common_ancestor=common_ancestor
                      )
                  else:
                      merging_occurred = True
                      self._regions[region_id] = region
  
          return merging_occurred
docs: Merge this guy with another SimAbstractMemory instance