code: def _create_agent_fn(self, agent_name):
      if agent_name == "dr3":
          agent_fn = offline_dr3_agent.OfflineJaxDR3Agent
          gin.bind_parameter(
              "JaxDQNAgent.network",
              networks.JAXDQNNetworkWithRepresentations,
          )
      else:
          raise ValueError(f"{agent_name} is a not a valid agent name.")
      return agent_fn
  
file_path: dopamine/tests/dopamine/labs/offline_rl/jax/offline_agent_test.py
imports: import functools
  from unittest import mock
  from absl.testing import absltest
  from absl.testing import parameterized
  from dopamine.jax.agents.dqn import dqn_agent
  from dopamine.labs.offline_rl import fixed_replay
  from dopamine.labs.offline_rl.jax import networks
  from dopamine.labs.offline_rl.jax import offline_dr3_agent
  import gin
  import jax
  from jax import numpy
label_desc: Use image node_id 2 for calling the OfflineAgentTest obj's underlying member method code with example usage: obj._create_agent_fn(agent_name) and returns: agent_fn