code: private static void setLevel(ArrayList level) {
          _syncLevel = nextLevel();
  
          if (_syncLevel == _syncLevels.size()) {
              _syncLevels.add(level);
          } else {
              _syncLevels.set(_syncLevel, level);
          }
      }
docs: Utility method to make a list into the new current level
  
  @param level