tuple should be equal to the number of encoder blocks.
decoder_block_out_channels (`Tuple[int]`, *optional*, defaults to `(64, 64, 64, 64)`):
Tuple of integers representing the number of output channels for each decoder block. The length of the
tuple should be equal to the number of decoder blocks.
act_fn (`str`, *optional*, defaults to `"relu"`):
Activation function to be used throughout the model.
latent_channels (`int`, *optional*, defaults to 4):