Get Moq to call a base class method that has not been overriden

I am using Asp.Net Identity in my MVC application and I have a class named ApplicationSignInManager that looks like this:

public class ApplicationSignInManager : SignInManager<ApplicationUser, string>
{
    public ApplicationSignInManager(ApplicationUserManager userManager, 
        IAuthenticationManager authenticationManager)
        : base(userManager, authenticationManager)
    {
    }

    public override Task<ClaimsIdentity> CreateUserIdentityAsync(ApplicationUser user)
    {
        return user.GenerateUserIdentityAsync((ApplicationUserManager)UserManager);
    }

    public static ApplicationSignInManager Create(IdentityFactoryOptions<ApplicationSignInManager> options, 
        IOwinContext context)
    {
        return new ApplicationSignInManager(context.GetUserManager<ApplicationUserManager>(), 
            context.Authentication);
    }
}

Now, I would like to write a unit test for an action on a controller. I am using the Microsoft Visual Studio Unit Test framework with Moq 4.5.10.

The action calls the PasswordSignInAsync method that is declared virtual in the base class SignInManager<ApplicationUser, string> but it is not overriden in the child class ApplicationSignInManager.

I have tried this option, too:

var mockSignInManager = new Mock<ApplicationSignInManager>()
        { CallBase = true };

mockSignInManager.Setup(
      m => m.PasswordSignInAsync(string.Empty, string.Empty, true, true));

But PasswordSignInAsync does not show up in the Intellisense and the compiler complains it cannot find that method on ApplicationSignInManager.

How do I get it to show up?