nl_tokens: @class FistError @extends Error
pl_tokens: function FistError ( code , msg ) { var err = new Error ( f ( '(%s) %s' , code , msg ) ) ; err . name = this . name ; Error . captureStackTrace ( <mask> , this . constructor ) ; /**
       * @public
       * @memberOf {FistError}
       * @property
       * @type {String}
       * */ this . code = code ; /**
       * @public
       * @memberOf {FistError}
       * @property
       * @type {String}
       * */ this . message = err . message ; /**
       * @public
       * @memberOf {FistError}
       * @property
       * @type {String}
       * */ this . stack = err . stack ; }