code: function(delimiter) {
          if (!_.isString(delimiter) && !_.isRegExp(delimiter)) {
              throw new Error('Delimiter must be a string or a regular expression!');
          }
          this._defaultArrayDelimiter = delimiter;
          return this;
      }
docs: Sets default array delimiter
  
  @param {string} delimiter Array delimiter
  @returns {metaProcessor} this
  
  @throws {Error} if delimiter is not a string
  
  @this {metaProcessor}