code: def encoder(self, x):
      mean = self.encoder_mean(x)
      logvar = 0.5 + self.encoder_var(x)
      return mean, logvar
  
file_path: DiCE/dice_ml/utils/sample_architecture/vae_model.py
imports: import torch
  import torch.utils.data
  from torch import nn
label_desc: Use image node_id 2 for calling the CF_VAE obj's underlying member method code with example usage: obj.encoder(x) and returns: mean,  logvar