code: public function getObjectArray($keys): array
      {
          return array_map(function ($value) {
              return $this->createObject($value);
          }, $this->getArray($keys));
      }
docs: Returns an array of objects from the data container. All values of the resulting array are casted to new
  data container instances.
  @param string|string[] $keys
  @return array|DataContainer[]