code: function (validation) {
  
              var validationArray = this._formatValidation(validation).split(','),
                  oneValidation;
  
              for (var i = 0; i < validationArray.length; i++) {
                  oneValidation = validationArray[i];
                  if (/^[a-z]+$/i.test(oneValidation)) {
                      validationArray[i] = oneValidation.toUpperCase();
                  }
              }
  
              return validationArray;
          }
docs: @private
  Splits the validation into an array, Uppercase the rules if they are not comparisons
  
  @param {String|Array} validation
  
  @returns {Array} Formatted validation keys