code: def _locate_engine_class(ffi, force_generic_engine):
      if _FORCE_GENERIC_ENGINE:
          force_generic_engine = True
      if not force_generic_engine:
          if "__pypy__" in sys.builtin_module_names:
              force_generic_engine = True
          else:
              try:
                  import _cffi_backend
              except ImportError:
                  _cffi_backend = "?"
              if ffi._backend is not _cffi_backend:
                  force_generic_engine = True
      if force_generic_engine:
          from . import vengine_gen
  
          return vengine_gen.VGenericEngine
      else:
          from . import vengine_cpy
  
          return vengine_cpy.VCPythonEngine
  
imports: import sys, os, binascii, shutil, io
  from .None import __version_verifier_modules__
  from .None import ffiplatform
  from .error import VerificationError
label_desc: Use image node_id 1 for calling a global function with example usage: _locate_engine_class(ffi, force_generic_engine) and returns: vengine_gen, vengine_cpy