core/src/main/java/com/opentext/ia/sdk/support/datetime/Dates.java
@Nullable
  public static String toIso(Date dateTime) {
    if (dateTime == null) {
      return null;
    }
    Calendar calendar = Calendar.getInstance();
    calendar.setTime(dateTime);
    return DatatypeConverter.printDateTime(calendar);
  }
@Nullable
  public static String toIso(Date dateTime) {
    if (dateTime == null) {
      return null;
    }
    Calendar calendar = Calendar.getInstance();
    calendar.setTime(dateTime);
    return DatatypeConverter.printDateTime(calendar);
  }
Convert a date to <a href="https://tools.ietf.org/html/rfc3339#section-5.6">ISO 8601 dateTime</a> format.
@param dateTime The datetime to convert
@return The dateTime in ISO format