class_docstr: BVE Builder.
docstr: Creates a policy.
docstr_tok: ["Creates","a","policy","."]
code: def make_policy(
      self,
      networks: bve_networks.BVENetworks,
      environment_spec: specs.EnvironmentSpec,
      evaluation: Optional[bool] = False,
  ) -> actor_core_lib.ActorCore:
      """Creates a policy."""
      del environment_spec, evaluation
  
      def behavior_policy(
          params: hk.Params,
          key: jax_types.PRNGKey,
          observation: networks_lib.Observation,
      ) -> networks_lib.Action:
          network_output = networks.policy_network.apply(
              params, observation, is_training=False
          )
          return networks.sample_fn(network_output, key)
  
      return actor_core_lib.batched_feed_forward_to_actor_core(
          behavior_policy
      )
  
imports: from typing import Iterator, Optional
  from acme import core
  from acme import specs
  from acme.agents.jax import actor_core
  from acme.agents.jax import actors
  from acme.agents.jax import builders
  from acme.agents.jax.bve import losses
  from acme.agents.jax.bve import networks
  from acme.agents.jax.dqn import learning_lib
  from acme.jax import networks
  from acme.jax import types
  from acme.jax import utils
  from acme.jax import variable_utils
  from acme.utils import counting
  from acme.utils import loggers
  import haiku
  import optax
label_desc: Use image node_id 4 for calling the BVEBuilder obj's underlying member method code with example usage: obj.make_policy(networks, environment_spec, evaluation) and returns: actor_core_lib, networks