code: def decode_num_to_char(number: str) -> str:
      index = Multi_tap.calculate_index(number)
      return Multi_tap.number_index_to_char(index)
  
file_path: Ciphey/ciphey/basemods/Decoders/multi_tap.py
imports: from typing import Dict, Optional
  from ciphey.iface import Config, Decoder, ParamSpec, T, U, registry
label_desc: Use image node_id 3 for calling the Multi_tap obj's underlying member method code with example usage: obj.decode_num_to_char(number) and returns: Multi_tap