code: def _get_objects_with_same_attribute(self,
                                           objects: Set[Object],
                                           attribute_function: Callable[[Object], str]) -> Set[Object]:
          
          objects_of_attribute: Dict[str, Set[Object]] = defaultdict(set)
          for entity in objects:
              objects_of_attribute[attribute_function(entity)].add(entity)
          if not objects_of_attribute:
              return set()
          most_frequent_attribute = max(objects_of_attribute, key=lambda x: len(objects_of_attribute[x]))
          if len(objects_of_attribute[most_frequent_attribute]) <= 1:
              return set()
          return objects_of_attribute[most_frequent_attribute]
docs: Returns the set of objects for which the attribute function returns an attribute value that
          is most frequent in the initial set, if the frequency is greater than 1. If not, all
          objects have different attribute values, and this method returns an empty set.