code: def make_appo_models(policy) -> ModelV2:
      """Builds model and target model for APPO.
  
      Returns:
          ModelV2: The Model for the Policy to use.
              Note: The target model will not be returned, just assigned to
              `policy.target_model`.
      """
      # Get the num_outputs for the following model construction calls.
      _, logit_dim = ModelCatalog.get_action_dist(
          policy.action_space, policy.config["model"]
      )
  
      # Construct the (main) model.
      policy.model = ModelCatalog.get_model_v2(
          policy.observation_space,
          policy.action_space,
          logit_dim,
          policy.config["model"],
          name=POLICY_SCOPE,
          framework=policy.framework,
      )
      policy.model_variables = policy.model.variables()
  
      # Construct the target model.
      policy.target_model = ModelCatalog.get_model_v2(
          policy.observation_space,
          policy.action_space,
          logit_dim,
          policy.config["model"],
          name=TARGET_POLICY_SCOPE,
          framework=policy.framework,
      )
      policy.target_model_variables = policy.target_model.variables()
  
      # Return only the model (not the target model).
      return policy.model
  
label_desc: Use image node_id 1 for calling a global function with example usage: make_appo_models(policy) and returns: policy