docs: function SelectorSubPart(text, type, line, col) {
  
      SyntaxUnit.call(this, text, line, col, Parser.SELECTOR_SUB_PART_TYPE);
  
      /**
       * The type of modifier.
       * @type String
       * @property type
       */
      this.type = type;
  
      /**
       * Some subparts have arguments, this represents them.
       * @type Array
       * @property args
       */
      this.args = [];
  
  }