code: def __init__(self, model_config: ModelConfig):
      super().__init__()
      self.model_config = model_config
  
imports: import pytest
  import torch
  from torch_geometric.explain import DummyExplainer, Explainer, ModelConfig, unfaithfulness
label_desc: Use image node_id 1 to create a new DummyModel object from inherited base classes: torch.nn with example: obj = DummyModel(model_config)