code: def __init__(self, input_dim, num_classes):
      super(_TestClassifier, self).__init__()
      self.fc = nn.Linear(input_dim, num_classes)
  
imports: import pytest
  import torch
  import torch.nn
  from torch.utils.data import DataLoader, TensorDataset
  from kale.embed.image_cnn import SimpleCNNBuilder
  from kale.pipeline.base_nn_trainer import BaseNNTrainer, CNNTransformerTrainer, MultimodalNNTrainer
  from kale.predict.class_domain_nets import ClassNet
label_desc: Use image node_id 1 to create a new _TestClassifier object from inherited base classes: nn with example: obj = _TestClassifier(input_dim, num_classes)