if (editRelationshipPageConfiguration != null) {
if (editRelationshipPageConfiguration != null && editRelationshipPageConfiguration.length() > 0) {
    public WOComponent editValues() {        WOComponent editPage = null;        String editRelationshipPageConfiguration = (String)d2wContext().valueForKey("editRelationshipPageConfiguration");        if (editRelationshipPageConfiguration != null) {            editPage = D2W.factory().pageForConfigurationNamed(editRelationshipPageConfiguration, session());            if (editPage instanceof EditRelationshipPageInterface) {                ((EditRelationshipPageInterface)editPage).setMasterObjectAndRelationshipKey(object(),propertyKey());                ((EditRelationshipPageInterface)editPage).setNextPage(context().page());            } else {                log.warn("Unsupported relationship editing page: " + editPage.getClass().getName());            }        }        return editPage != null ? editPage : super.editValues();    }