code: def check_len(self):
      assert len(self.y_queue) == len(self.t_queue)
  
file_path: pfrl/tests/collections_tests/test_random_access_queue.py
imports: import collections
  import pytest
  from pfrl.collections.random_access_queue import RandomAccessQueue
label_desc: Use image node_id 4 for calling the TestRandomAccessQueue obj's underlying member method code with example usage: obj.check_len() without return types