code: def get_code(self, symbol: str) -> tp.Optional[bitarray]:
      node = self.get_node(symbol)
      return None if node is None else node.code
  
imports: import re
  import typing
  from collections import Counter, deque
  from dataclasses import dataclass
  from bitarray import bitarray, util
  from fairseq.data import Dictionary
label_desc: Use image node_id 6 for calling the HuffmanCoder obj's underlying member method code with example usage: obj.get_code(symbol) and returns: unknown