CH12: Custom Models: number of iterations for lower Residual Block

Hi,

First thank you for the truly amazing book!

I got a doubt on the number of iterations for the lower Residual Block Second Edition page 395

Figure 12-3 shows a x3 on the Lower residual block, so I thought it should iterate 3 times

But in the code, here and in the book I see

> def call(self, inputs):
> [...]
> for _ in range(1 + 3): # loops four times
> Z = self.block1(Z)

Am I simply reading the Figure wrong?

Thanks so much

G.