public static class ApiVersionAddExtensionHandler
{
    public static IServiceCollection AddApiVersionHandler(this IServiceCollection services)
    {

        services.AddApiVersioning(options => options.ReportApiVersions = true);
        services.AddVersionedApiExplorer(
            options =>
            {
                options.GroupNameFormat = "'v'VVV";
                options.SubstituteApiVersionInUrl = true;
            });

        return services;
    }
}