protected long getTimeDiffValue() {
   long l = 0L;
   EmsTimeDiffProperty p = (EmsTimeDiffProperty) getPropertyObject("_emsTimeDiff");
   if (p != null) {
     l = p.getEmsTimeDiff(this);
   }
   return l;
 }
 public long getEmsTimeDiff() {
   return m_EmsTimeDiff == null ? 0L : m_EmsTimeDiff.getEmsTimeDiff(this);
 }