code: def write_source_to_f(self):
      prnt = self._prnt
      # first paste some standard set of lines that are mostly '#include'
      prnt(cffimod_header)
      # then paste the C source given by the user, verbatim.
      prnt(self.verifier.preamble)
      #
      # call generate_gen_xxx_decl(), for every xxx found from
      # ffi._parser._declarations.  This generates all the functions.
      self._generate("decl")
      #
      # on Windows, distutils insists on putting init_cffi_xyz in
      # 'export_symbols', so instead of fighting it, just give up and
      # give it one
      if sys.platform == "win32":
          if sys.version_info >= (3,):
              prefix = "PyInit_"
          else:
              prefix = "init"
          modname = self.verifier.get_module_name()
          prnt("void %s%s(void) { }\n" % (prefix, modname))
  
imports: import sys, os
  import types
  from .None import model
  from .error import VerificationError
label_desc: Use image node_id 6 for calling the VGenericEngine obj's underlying member method code with example usage: obj.write_source_to_f() without return types