code: def _decode_and_write_signs_to_file(
      file, reader: HuffmanReader, tree: Node, additional_bits: int
  ):
      tree_finder = TreeFinder(tree)
      is_end_of_file = False
  
      while not is_end_of_file:
          bit = reader.get_bit()
          if bit != -1:
              while not tree_finder.find(bit):  # read whole code
                  bit = reader.get_bit(0)
              file.write(bytes([tree_finder.found]))
          else:  # There is last byte in buffer to parse
              is_end_of_file = True
              last_byte = reader.buffer
              last_byte = last_byte[
                  :-additional_bits
              ]  # remove additional "0" used to fill byte
              for bit in last_byte:
                  if tree_finder.find(bit):
                      file.write(bytes([tree_finder.found]))
  
imports: from collections import defaultdict, deque
  import heapq
label_desc: Use image node_id 3 for calling the HuffmanCoding obj's underlying member method code with example usage: obj._decode_and_write_signs_to_file(file, reader, tree, additional_bits) without return types