def build(self, validator, namespace, config_key, default, help):
        proxy_attrs = validator, namespace, config_key, default
        proxy_key = repr(proxy_attrs)
        if proxy_key in self.proxies:
            return self.proxies[proxy_key]

        value_proxy = proxy.ValueProxy(*proxy_attrs)
        register_value_proxy(namespace, value_proxy, help)
        return self.proxies.setdefault(proxy_key, value_proxy)
Testing command_use()
dataset/ETHPy150Open dnephin/PyStaticConfiguration/staticconf/getters.py/ProxyFactory.build--crossover with--dataset/ETHPy150Open reverse-shell/routersploit/routersploit/test/test_interpreter.py/RoutersploitInterpreterTest.test_command_use_unknown_extension