code: def normalization_data(self):
      return {
          NormalizationKey.STATE: NormalizationData(
              dense_normalization_parameters=only_continuous_normalizer(
                  list(range(self.num_arms)), MU_LOW, MU_HIGH
              )
          )
      }
  
imports: import random
  import gym
  import numpy
  import reagent.core.types
  import torch
  from reagent.core.dataclasses import dataclass
  from reagent.core.parameters import NormalizationData, NormalizationKey
  from reagent.gym.envs.env_wrapper import EnvWrapper
  from reagent.gym.normalizers import only_continuous_normalizer
label_desc: Use image node_id 6 for calling the ChangingArms obj's underlying member method code with example usage: obj.normalization_data() and returns: dict