code: function SyntaxError(message, line, col) {
      Error.call(this);
      this.name = this.constructor.name;
  
      /**
       * The column at which the error occurred.
       * @type int
       * @property col
       */
      this.col = col;
  
      /**
       * The line at which the error occurred.
       * @type int
       * @property line
       */
      this.line = line;
  
      /**
       * The text representation of the unit.
       * @type String
       * @property text
       */
      this.message = message;
  
  }
docs: Type to use when a syntax error occurs.
  @class SyntaxError
  @namespace parserlib.util
  @constructor
  @param {String} message The error message.
  @param {int} line The line at which the error occurred.
  @param {int} col The column at which the error occurred.