docstr: Decode latent representation back to pixel space.
code: def decode(self, z):
      """
      Decode latent representation back to pixel space.
      """
      z = self.post_quant_conv(z)
      dec = self.decoder(z)
      return dec
  
imports: from contextlib import contextmanager
  import pytorch_lightning
  import torch
  import torch.nn.functional
  from nemo.collections.multimodal.modules.stable_diffusion.diffusionmodules.model import Decoder, Encoder
  from nemo.collections.multimodal.modules.stable_diffusion.distributions.distributions import DiagonalGaussianDistribution
  from nemo.collections.multimodal.parts.stable_diffusion.utils import instantiate_from_config
label_desc: Use image node_id 7 for calling the AutoencoderKL obj's underlying member method code with example usage: obj.decode(z) and returns: dec