code: def setUp(self, capacity, normalize_by_max):
      self.capacity = capacity
      self.normalize_by_max = normalize_by_max
      self.num_steps = 1
  
imports: import collections
  import copy
  import os
  import tempfile
  import unittest
  import numpy
  import pytest
  import torch
  from pfrl import replay_buffer, replay_buffers
label_desc: Use image node_id 1 for calling the TestPrioritizedReplayBuffer obj's underlying member method code with example usage: obj.setUp(capacity, normalize_by_max) without return types