new Client
                {
                    ClientId = "spa-client",
                    ClientName = "SPA",
                    RequireClientSecret = false,
                    AllowedGrantTypes = GrantTypes.Code,
                    RequirePkce = true,
                    AllowAccessTokensViaBrowser = false,
                    RequireConsent = false,

                    RedirectUris = { "https://localhost:44370/signin-callback", "http://localhosts:44370/assets/silent-callback.html" },
                    PostLogoutRedirectUris = { "https://localhost:44370/signout-callback" },
                    AllowedCorsOrigins =     { "https://localhost:44370" },

                     AllowedScopes =
                    {
                        IdentityServerConstants.StandardScopes.OpenId,
                        IdentityServerConstants.StandardScopes.Profile,
                    },
                    AccessTokenLifetime = 600
                }