class_docstr: Builder for D4PG which constructs individual components of the agent.
code: def __init__(self, config: D4PGConfig):
      self._config = config
  
imports: import copy
  import dataclasses
  import functools
  from typing import Iterator, List, Optional, Tuple, Union, Sequence
  from acme import adders
  from acme import core
  from acme import datasets
  from acme import specs
  from acme import types
  from acme.adders import reverb
  from acme.agents import agent
  from acme.agents.tf import actors
  from acme.agents.tf.d4pg import learning
  from acme.tf import networks
  from acme.tf import utils
  from acme.tf import variable_utils
  from acme.utils import counting
  from acme.utils import loggers
  import reverb
  import sonnet
  import tensorflow
label_desc: Use image node_id 1 to create a new D4PGBuilder object  with example: obj = D4PGBuilder(config)