code: def _check_and_verify(self):
      assert hasattr(
          self.encoder, "output_dim"
      ), "An encoder backbone must have an output_dim attribute"
      if isinstance(self.decoder, nn.Identity):
          self.decoder.output_dim = self.encoder.output_dim
      assert hasattr(
          self.decoder, "output_dim"
      ), "A decoder must have an output_dim attribute"
  
imports: import warnings
  from abc import ABCMeta, abstractmethod
  from typing import Dict, Optional
  import pytorch_lightning
  import torch
  import torch.nn
  from omegaconf import DictConfig, OmegaConf
  from pytorch_tabular.models.base_model import _create_optimizer
  from pytorch_tabular.utils import get_logger, getattr_nested, reset_all_weights
label_desc: Use image node_id 3 for calling the SSLBaseModel obj's underlying member method code with example usage: obj._check_and_verify() without return types