case ACQUIRE_OPERATION:
return new AcquireOperation();
case AVAILABLE_OPERATION:
return new AvailableOperation();
case DEAD_MEMBER_BACKUP_OPERATION:
return new DeadMemberBackupOperation();
case DRAIN_BACKUP_OPERATION:
return new DrainBackupOperation();
case DRAIN_OPERATION:
return new DrainOperation();
case INIT_BACKUP_OPERATION: