code: function(week) {
        var weekday = callDateGet(this, 'Day') || 7;
        if(isUndefined(week)) return;
        this.set({ 'month': 0, 'date': 4 });
        this.set({ 'weekday': 1 });
        if(week > 1) {
          this.addWeeks(week - 1);
        }
        if(weekday !== 1) {
          this.advance({ 'days': weekday - 1 });
        }
        return this.getTime();
      }
docs: *
  @method setISOWeek()
  @returns Nothing
  @short Sets the week (of the year) as defined by the ISO-8601 standard.
  @extra Note that this standard places Sunday at the end of the week (day 7).
  
  @example
  
  d = new Date(); d.setISOWeek(15); d; -> 15th week of the year
  
  *