/** * Pull the timestamp for this obx out. if an invalid date is found, null is returned * * @param obx the obs to parse and get the timestamp from * @return an obx timestamp or null * @throws HL7Exception * @see #getDatetime(TS) */ private Date getDatetime(OBX obx) throws HL7Exception { TS ts = obx.getDateTimeOfTheObservation(); return getDatetime(ts); }