code: function(iso) {
        var offset = this._utc ? 0 : this.getTimezoneOffset();
        var colon  = iso === true ? ':' : '';
        if(!offset && iso) return 'Z';
        return padNumber(floor(-offset / 60), 2, true) + colon + padNumber(math.abs(offset % 60), 2);
      }
docs: *
  @method getUTCOffset([iso])
  @returns String
  @short Returns a string representation of the offset from UTC time. If [iso] is true the offset will be in ISO8601 format.
  @example
  
  new Date().getUTCOffset()     -> "+0900"
  new Date().getUTCOffset(true) -> "+09:00"
  
  *