/// <summary>添加其他namespace,使用Configuration.GetSection(namespace)读取</summary>
 public static IApolloConfigurationBuilder AddtNamespace(this IApolloConfigurationBuilder builder, string @namespace) =>
 builder.AddtNamespace(@namespace, @namespace);
 /// <summary>添加默认namespace: application,直接读取配置</summary>
 public static IApolloConfigurationBuilder AddDefault(this IApolloConfigurationBuilder builder) =>
 builder.AddtNamespace(ConfigConsts.NamespaceApplication, null);