def METHOD_NAME(self):
    cli.RuntimeAPI(self.pre, self.standard_client, self.mc_client).do_load_new_config_file(self.json)
    with open(self.default_config,'r') as def_file:
        for line in def_file:
            cli.RuntimeAPI(self.pre, self.standard_client, self.mc_client).onecmd(line.strip('\n'))
    cli.RuntimeAPI(self.pre, self.standard_client, self.mc_client).do_swap_configs('')