class_docstr: Maps an opcode index to an op name.
code: def __init__(self, data):
      self.code_to_name = {}
      for idx, d in enumerate(data["operator_codes"]):
          self.code_to_name[idx] = BuiltinCodeToName(d["builtin_code"])
          if self.code_to_name[idx] == "CUSTOM":
              self.code_to_name[idx] = NameListToString(
                  d["custom_code"]
              )
  
imports: import json
  import os
  import re
  import sys
  import numpy
label_desc: Use image node_id 1 to create a new OpCodeMapper object  with example: obj = OpCodeMapper(data)