public static IIdentityServerBuilder AddInMemoryClientStoreExtra(this IIdentityServerBuilder builder) { builder.Services.RemoveAll <IClientStore>(); builder.Services.TryAddTransient <InMemoryClientStoreExtra>(); builder.Services.TryAddTransient <IClientStoreExtra, InMemoryClientStoreExtra>(); builder.AddClientStoreCacheExtra <InMemoryClientStoreExtra>(); return(builder); }