def transform(self, tree, program_config):
tree = PyBasicConversions().visit(tree)
fib_fn = tree.find(FunctionDecl, name="apply")
arg_type = program_config.args_subconfig['arg_type']
fib_fn.return_type = arg_type()
fib_fn.params[0].type = arg_type()
c_translator = CFile("generated", [tree])
return [c_translator]
