public async Task GetTokenWorksWithExplicitScheme()
{
var context = new DefaultProtoContext();
var services = new ServiceCollection().AddOptions()
.AddAuthenticationCore(o => o.AddScheme("simple", s => s.HandlerType = typeof(SimpleAuth)));
context.RequestServices = services.BuildServiceProvider();
Assert.Equal("1", await context.GetTokenAsync("simple", "One"));
Assert.Equal("2", await context.GetTokenAsync("simple", "Two"));
Assert.Equal("3", await context.GetTokenAsync("simple", "Three"));
}