/**
* Adds an instance if it is not present
*
* @param prop the HL7Properties
* @param c the Class of the desired type
* @return the new HL7DataTree
*/
public HL7DataTree addIfNotPresent(final HL7Properties prop, final Class<? extends HL7Data> c) {
if (!containsChild(c)) {
return addChild(UtilHL7.getInstance(prop, c));
}
return null;
}
/**
* Adds an instance at the given position if it is not present there
*
* @param prop the HL7Properties
* @param i the desired position
* @param c the Class of the desired type
* @return the new HL7DataTree
*/
public HL7DataTree addIfNotAtPosition(
final HL7Properties prop, final int i, final Class<? extends HL7Data> c) {
if (!isChildDesiredType(i, c)) {
return addChild(i, UtilHL7.getInstance(prop, c));
}
return null;
}