code: def make_dqn_agent(self, env, q_func, opt, explorer, rbuf, gpu):
      return iqn.IQN(
          q_func,
          opt,
          rbuf,
          gpu=gpu,
          gamma=0.9,
          explorer=explorer,
          replay_start_size=100,
          target_update_interval=100,
          quantile_thresholds_N=self.quantile_thresholds_N,
          quantile_thresholds_N_prime=self.quantile_thresholds_N_prime,
          act_deterministically=True,
      )
  
imports: import basetest_dqn_like
  import numpy
  import pytest
  import torch
  from basetest_training import _TestBatchTrainingMixin
  from torch import nn
  import pfrl
  from pfrl.agents import iqn
  from pfrl.testing import torch_assert_allclose
label_desc: Use image node_id 3 for calling the TestIQNOnDiscreteABC obj's underlying member method code with example usage: obj.make_dqn_agent(env, q_func, opt, explorer, rbuf, gpu) and returns: iqn