code: def build_model(self):
      return UnigramModel(self.dict)
  
file_path: ParlAI/parlai/agents/test_agents/unigram.py
imports: import torch
  import torch.nn
  from parlai.core.torch_generator_agent import TorchGeneratorAgent, TorchGeneratorModel
label_desc: Use image node_id 1 for calling the UnigramAgent obj's underlying member method code with example usage: obj.build_model() and returns: UnigramModel