.NET Core Identity UI - заместване на SignInManager‹IdentityUser›

Опитвам:

public class VoySignInManager : SignInManager<IdentityUser>
{
    public VoySignInManager(Microsoft.AspNetCore.Identity.UserManager<Microsoft.AspNetCore.Identity.IdentityUser> userManager, Microsoft.AspNetCore.Http.IHttpContextAccessor contextAccessor, Microsoft.AspNetCore.Identity.IUserClaimsPrincipalFactory<Microsoft.AspNetCore.Identity.IdentityUser> claimsFactory, Microsoft.Extensions.Options.IOptions<Microsoft.AspNetCore.Identity.IdentityOptions> optionsAccessor, Microsoft.Extensions.Logging.ILogger<Microsoft.AspNetCore.Identity.SignInManager<Microsoft.AspNetCore.Identity.IdentityUser>> logger, Microsoft.AspNetCore.Authentication.IAuthenticationSchemeProvider schemes)
        : base(userManager, contextAccessor, claimsFactory, optionsAccessor, logger, schemes)
    {
    }

    public override Task<Microsoft.AspNetCore.Identity.SignInResult> PasswordSignInAsync(IdentityUser user, string password, bool isPersistent, bool lockoutOnFailure)
    {
        return Microsoft.AspNetCore.Identity.SignInResult.Success;
    }
}

Взимам:

Error   CS0029  Cannot implicitly convert type 'Microsoft.AspNetCore.Identity.SignInResult' to 'System.Threading.Tasks.Task<Microsoft.AspNetCore.Identity.SignInResult>'    

какво правя грешно как да върна успешен SignInResult тук?

(забележете, че очевидно това е просто опростена версия, за да покаже грешката)