Attribute membAttr = delta.getObject().getAttributeByName(groupMemberName);
// if not found, perform an additional read on the underlying connector for the same connector object
if (membAttr == null) {
final OperationOptionsBuilder oob = new OperationOptionsBuilder();
oob.setAttributesToGet(groupMemberName);
membAttr = connector.getObjectAttribute(ObjectClass.GROUP, delta.getUid(), oob.build(), groupMemberName);
}
if (membAttr != null && membAttr.getValue() != null) {
result = membAttr.getValue();
}