code: def union_config(base_attack_names, restart=1):
      return {
          "base_attack_names": base_attack_names,
          "restart": restart,
      }
  
imports: from absl import logging
  import gin
  import neural_structured_learning
  from multi_representation_adversary.cleverhans_adapter import sparse_l1_descent
  from multi_representation_adversary.cleverhans_adapter import utils_tf
  import numpy
  import tensorflow.compat.v2
label_desc: Use image node_id 4 for calling a global function with example usage: union_config(base_attack_names, restart) and returns: dict