code: def __extract_features(self):
          
          
          self.__features = [];
          
          if (len(self.__tree.leafes) == 1):
              # parameters are too general, copy all entries
              for entry in self.__tree.leafes[0].entries:
                  self.__features.append(entry);
  
          else:
              # copy all leaf clustering features
              for node in self.__tree.leafes:
                  self.__features.append(node.feature);
docs: !
          @brief Extracts features from CF-tree cluster.