code: def decode_chunk(self, s: str):
      padded_bytes = s.endswith("=")
  
      decoded = [0 for _ in range(8)]
      for i in range(8):
          decoded[i] = (
              0
              if i == 7 and padded_bytes
              else self.chars_to_byte(s[i * 2 : i * 2 + 2])
          )
  
      result = [0 for _ in range(7)]
      for i in range(7):
          t1 = decoded[i] << (i + 1)
          t2 = decoded[i + 1] >> (7 - i - 1)
          result[i] = t1 | t2
      return result
  
file_path: Ciphey/ciphey/basemods/Decoders/base69.py
imports: import re
  from math import ceil
  from typing import Dict, Optional
  from ciphey.iface import Config, Decoder, ParamSpec, T, U, WordList, registry
label_desc: Use image node_id 2 for calling the Base69 obj's underlying member method code with example usage: obj.decode_chunk(s) and returns: result