code: def __process_by_ccore(self):
          
          if isinstance(self.__initializer, kmeans_plusplus_initializer):
              initializer = wrapper.elbow_center_initializer.KMEANS_PLUS_PLUS
          else:
              initializer = wrapper.elbow_center_initializer.RANDOM
  
          result = wrapper.elbow(self.__data, self.__kmin, self.__kmax, initializer)
  
          self.__kvalue = result[0]
          self.__wce = result[1]
docs: !
          @brief Performs processing using C++ implementation.