code: function (validation) {
  
              validation = validation.toString().replace(/\s/g, '');
  
              if (validation.charAt(0) === "[" && validation.charAt(validation.length - 1) === "]") {
                  validation = validation.replace(/^\[|]$/g, '');
              }
  
              return validation;
  
          }
docs: @private
  This function unifies the data through the validation process.
  String, Uppercase and spaceless.
  
  @param {string|array} validation
  
  @returns {string}