code: function labels (configName, callback) {
  
      if (callback) {
          return get(configName).schema.statics.getLabels(callback);
      }
  
      return get(configName).schema.statics.getLabels();
  }
docs: Retrieve the labels for a config
  @param  {String}   configName The name of the config
  @param  {Function} callback  An optional callback to return the labels object to
  @return {Void}