/**
* Iterates through block4 fields and return the first one whose name matches 72, or <code>null
* </code> if none is found.<br>
* The first occurrence of field 72 at MT291 is expected to be the only one.
*
* @return a Field72 object or <code>null</code> if the field is not found
* @see SwiftTagListBlock#getTagByName(String)
* @throws IllegalStateException if SwiftMessage object is not initialized
*/
public Field72 getField72() {
if (getSwiftMessage() == null) {
throw new IllegalStateException("SwiftMessage was not initialized");
}
if (getSwiftMessage().getBlock4() == null) {
log.info("block4 is null");
return null;
} else {
final Tag t = getSwiftMessage().getBlock4().getTagByName("72");
if (t == null) {
log.fine("field 72 not found");
return null;
} else {
return new Field72(t.getValue());
}
}
}
