code: def _add_badmodule(self, name, caller):
      if name not in self.badmodules:
          self.badmodules[name] = {}
      if caller:
          self.badmodules[name][caller.__name__] = 1
      else:
          self.badmodules[name]["-"] = 1
  
imports: import dis
  import importlib._bootstrap_external
  import importlib.machinery
  import marshal
  import os
  import io
  import sys
label_desc: Use image node_id 15 for calling the ModuleFinder obj's underlying member method code with example usage: obj._add_badmodule(name, caller) without return types