Algorithm 1 CLUE updating z incrementally

[alishibli97]

I was wondering how the latent variable z in algorithm 1 of the paper is being updated. In the paper line 6 of the algorithm 1, I understand that you update z and then use that updated z in line 3. However, the code here just takes the initial z value at each iteration through the function CLUE.uncertainty_from_z()

CLUE/interpret/CLUE.py

Line 104 in 1d7a70d

def uncertainty_from_z(self):

Can you provide a small clarification on this please?
Thanks in advance :)