core

Microsoft.Extensions.Configuration.UserSecrets

 {
     namespace Microsoft.Extensions.Configuration {
         public static class UserSecretsConfigurationExtensions {
+            public static IConfigurationBuilder AddUserSecrets(this IConfigurationBuilder configuration, Assembly assembly, bool optional, bool reloadOnChange);
+            public static IConfigurationBuilder AddUserSecrets(this IConfigurationBuilder configuration, string userSecretsId, bool reloadOnChange);
+            public static IConfigurationBuilder AddUserSecrets<T>(this IConfigurationBuilder configuration, bool optional, bool reloadOnChange) where T : class;
         }
     }
 }