Output of UniTensor.GetTotalQnums not sorted

[yingjerkao]

import Tor10
bd_sym_1 = Tor10.Bond(3, Tor10.BD_KET, qnums=[[0, 2, 1, 0],
                                                [1, 1, -1, 1],
                                                [2, -1, 1, 0]])
bd_sym_2 = Tor10.Bond(4, Tor10.BD_KET, qnums=[[-1, 0, -1, 3],
                                                [0, 0, -1, 2],
                                                [1, 0, 1, 0],
                                                [2, -2, -1, 1]])
bd_sym_3 = Tor10.Bond(2, Tor10.BD_BRA, qnums=[[-4, 3, 0, -1],
                                                [1, 1, -2, 3]])

sym_T = Tor10.UniTensor(bonds=[bd_sym_1, bd_sym_2, bd_sym_3], rowrank=2, labels=[1, 2, 3])

tqin, tqout = sym_T.GetTotalQnums()

qin=Tor10.Bond(12,Tor10.BD_KET, qnums=[[+4, -3, +0, +1], [+3, -1, +2, +0], [+2, -1, +0, +2],
                                       [+1, -1, +0, +3], [+3, -1, -2, +2], [+2, +1, +0, +1],
                                       [+1, +1, -2, +3], [+0, +1, -2, +4], [+2, +0, +0, +1],
                                       [+1, +2, +2, +0], [+0, +2, +0, +2], [-1, +2, +0, +3]]
                           )
print(tqin)

print(qin)

Output

Dim = 12 |
KET     : U1::  +4 +3 +2 +1 +3 +2 +1 +0 +2 +1 +0 -1
          U1::  -3 -1 -1 -1 -1 +1 +1 +1 +0 +2 +2 +2
          U1::  +0 +2 +0 +0 -2 +0 -2 -2 +0 +2 +0 +0
          U1::  +1 +0 +2 +3 +2 +1 +3 +4 +1 +0 +2 +3
         
Dim = 12 |
KET     : U1::  +4 +3 +3 +2 +2 +2 +1 +1 +1 +0 +0 -1
          U1::  -3 -1 -1 +1 +0 -1 +2 +1 -1 +2 +1 +2
          U1::  +0 +2 -2 +0 +0 +0 +2 -2 +0 +0 -2 +0
          U1::  +1 +0 +2 +1 +1 +2 +0 +3 +3 +2 +4 +3

I wonder why bond qnums in the Bond.assign should be sorted? Or should we sort the output of UniTensor.GetTotalQnums?