Startup after adding DefaultHeaderFilter to Swagger

Startup.cs

 public void ConfigureServices(IServiceCollection services)
 {
    services.AddControllers();
    services.AddSwaggerGen(options =>
     {
         options.SwaggerDoc("v1", new OpenApiInfo { Title = "My Awesome Application", Version = "v1" });
         c.OperationFilter<DefaultHeaderFilter>();
     });
}