code: def get_bit(self, buff_limit=8):
      if self._load_byte(buff_limit):
          bit = self.buffer.pop(0)
          return bit
      else:
          return -1
  
imports: from collections import defaultdict, deque
  import heapq
label_desc: Use image node_id 6 for calling the HuffmanReader obj's underlying member method code with example usage: obj.get_bit(buff_limit) and returns: bit, unknown