static pushTimeHasTimezoneComponent(pushTimeParam: string): boolean {
    const offsetPattern = /(.+)([+-])\d\d:\d\d$/;
    return (
      pushTimeParam.indexOf('Z') === pushTimeParam.length - 1 || offsetPattern.test(pushTimeParam) // 2007-04-05T12:30Z
    ); // 2007-04-05T12:30.000+02:00, 2007-04-05T12:30.000-02:00
  }
Checks if a ISO8601 formatted date contains a timezone component
@param pushTimeParam {string}
@returns {boolean}