code: def is_full(self):
      return self.full
  
imports: import binascii
  import collections
  import os
  import pickle
  from datetime import datetime
  from struct import calcsize, pack, unpack
  from pfrl.collections.random_access_queue import RandomAccessQueue
label_desc: Use image node_id 2 for calling the _ChunkWriter obj's underlying member method code with example usage: obj.is_full() and returns: self