U1db implementation

I think you meant this:
``
def get_target_info():
    info[TARGET_REPLICA_UID_KEY] = TARGET_REPLICA_UID_KEY
    info[TARGET_REPLICA_GEN_KEY] = TARGET_REPLICA_GEN_KEY
    info[TARGET_REPLICA_TRANS_ID_KEY] = TARGET_REPLICA_TRANS_ID_KEY
``
?