/**
  * Convert to display string of entity's data. (no relation data)
  *
  * @return The display string of all columns and relation existences. (NotNull)
  */
 public String toString() {
   return buildDisplayString(InternalUtil.toClassTitle(this), true, true);
 }
 protected boolean xSV(Object value1, Object value2) { // isSameValue()
   return InternalUtil.isSameValue(value1, value2);
 }
 protected int xCH(int result, Object value) { // calculateHashcode()
   return InternalUtil.calculateHashcode(result, value);
 }
 protected String xfUD(Date date) { // formatUtilDate()
   return InternalUtil.toString(date, xgDP());
 }