code: public static String getScimConformFormatedDateTime(DateTime dateTime) {
          DateTimeFormatter dateFormat = DateTimeFormat.forPattern("yyyy-MM-dd'T'HH:mm:ss.SSS");
          return dateFormat.print(dateTime);
      }
docs: Formats a given {@link DateTime} to the SCIM needed string form with the
  pattern "yyyy-MM-dd'T'HH:mm:ss.SSS"
  
  @param dateTime
  dateTime to be converted
  @return dateTime as scim conform String