code: function getResetterObj (values, keys) {
    var resetterObj = {};
  
    (keys || Object.keys(values)).forEach(function (key) {
      if (values[key].resetter) {
        resetterObj[values[key].resetter] = key;
      }
    });
  
    return resetterObj;
  }
docs: Gets the resetter keys from some set of values.
  
  @param {Object} values
  @param {Array} keys optional
  @return {Object}
  @api private