 defaults to (UpDecoderBlock2D)) —
Tuple of upsample block types.   block_out_channels (Tuple[str], optional, defaults to (64,)) —
Tuple of block output channels.   layers_per_block (int, optional, defaults to 2) —
Number of ResNet layer for each block.   act_fn (str, optional, defaults to silu) —
The activation function to use.   latent_channels (int, optional, defaults to 4) —
Number of channels in the latent space.   norm_num_groups (int, op