# Logins Base and client-side login service implementations. ## Key Files - **`AcLoginServiceBase.cs`** — Abstract generic base implementing `IAcLoginServiceBase`. Provides `IsLoggedIn` and `LoggedInUser` properties. Heavily constrained generics (TUser, TProfile, TCompany, TUserToServiceProvider, TProfileAddress). - **`AcLoginServiceClient.cs`** — Client-side login service extending `AcLoginServiceBase`, implementing `IAcLoginServiceClient`. Provides stubs for `Login`, `Logout`, `Registration`, `ChangePassword`, `ForgotPassword` (sync + async variants).