docs: public static Date parseDateTime(String s, TimeZone tz)
      {
          DateFormat df;
  
          if (s == null)
          {
              return null;
          }
  
          df = new SimpleDateFormat(DATE_TIME_PATTERN);
          if (tz != null)
          {
              df.setTimeZone(tz);
          }
          try
          {
              return df.parse(s);
          }
          catch (ParseException e)
          {
              return null;
          }
      }