code: def read(self):
      return self.loader.get_source(self.string)
  
imports: import errno
  import sys
  import os
  import re
  import pkgutil
  import warnings
  import inspect
  import subprocess
  import ast
label_desc: Use image node_id 2 for calling the DummyFile obj's underlying member method code with example usage: obj.read() and returns: self