golb_15_call_app_initialiser.cs

// Startup.cs

...etc

using Microsoft.AspNetCore.Authorization;

public void ConfigureServices(IServiceCollection services)
{
    ... etc
    services.AddDefaultIdentity<IdentityUser>(options => options.SignIn.RequireConfirmedAccount = true)
        .AddRoles<IdentityRole>()
        .AddEntityFrameworkStores<ApplicationDbContext>();
}


public void Configure(IApplicationBuilder app, IWebHostEnvironment env, UserManager<IdentityUser> userManager, RoleManager<IdentityRole> roleManager)
{
    ... etc
    ApplicationInitialiser.Initialise(userManager, roleManager).Wait();
}