def store(self, config_file):
        """ Store the configuration dictionary to a file."""

        selfcopy = copy.deepcopy(self)
        selfcopy.filter_exports()

        with open(config_file, 'w') as outf:
            yaml.dump(
                selfcopy.node,
                outf,
                width=80,
                indent=4,
                default_flow_style=False,
                Dumper=ConfigDumper)
Store the configuration dictionary to a file.