public IdentifiedDataSerializable create(int typeId) {
switch (typeId) {
case ACQUIRE_BACKUP_OPERATION:
return new AcquireBackupOperation();
case ACQUIRE_OPERATION:
return new AcquireOperation();
case AVAILABLE_OPERATION:
return new AvailableOperation();
case DEAD_MEMBER_BACKUP_OPERATION:
return new DeadMemberBackupOperation();
case DRAIN_BACKUP_OPERATION: