/// <summary>
/// For use with IGameHostBuilder.
/// </summary>
/// <param name="builder"></param>
/// <param name="featureCollection"></param>
public TestServer(IGameHostBuilder builder, IFeatureCollection featureCollection)
: this(featureCollection)
{
if (builder == null)
{
throw new ArgumentNullException(nameof(builder));
}
var host = builder.UseServer(this).Build();
host.StartAsync().GetAwaiter().GetResult();
_hostInstance = host;
}