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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _rename_nvram_file(self):
 """ Before starting the VM, rename the nvram and vlan.dat files with the correct IOU application identifier. """


        destination = self._nvram_file()
        for file_path in glob.glob(os.path.join(glob.escape(self.working_dir), "nvram_*")):
            shutil.move(file_path, destination)
        destination = os.path.join(self.working_dir, "vlan.dat-{:05d}".format(self.application_id))
        for file_path in glob.glob(os.path.join(glob.escape(self.working_dir), "vlan.dat-*")):
            shutil.move(file_path, destination)