* PDC-7: "Catalogue Identifier" - creates it if necessary
*/
public ST getPdc7_CatalogueIdentifier() {
ST ret = null;
try {
Type t = this.getField(7, 0);
ret = (ST)t;
} catch (ClassCastException cce) {
LoggerFactory.getLogger(getClass()).error("Unexpected problem obtaining field value. This is a bug.", cce);
throw new RuntimeException(cce);
} catch (HL7Exception he) {