// if its source part's name changes
// (eg AddPartBehaviour.RENAME_IF_NAME_EXISTS)
if (this.getSourceP()!=null
&& (!(this.getSourceP() instanceof OpcPackage))) {
try {
return new PartName(PartName.getRelationshipsPartName(
sourceP.getPartName().getName() ));
} catch (InvalidFormatException e) {
log.error(e.getMessage(), e);
throw new RuntimeException(e);
}