docs: function(config) {
      var filePath = null;
      
      if(config.levelControllerConfig && config.levelControllerConfig.fileName) {
          filePath = path.join(_getLevelDir(config), config.levelControllerConfig.fileName);        
      } else {
          throw Errors.invalidConfig('Invalid configuration. Level controller file name not defined.');
      }
      return filePath;
  }