How Swagger shows a ServiceStack service response of List<T>

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Diagnostics;
using Funq;
using ServiceStack;
using ServiceStack.Host;
using ServiceStack.Host.Handlers;
using ServiceStack.Web;

using ServiceStack.Text;
using ServiceStack.Api.Swagger;


namespace testService
{
    using test.service.model;



    class Program
    {
        static void Main(string[] args)
        {
            new AppHost().Init().Start("http://*:20801/");
            "Test API  listening at http://localhost:20801 ".Print();
            Process.Start("http://localhost:20801/");

            Console.ReadLine();
        }
    }



    public class AppHost : AppSelfHostBase
    {
        /// <summary>
        /// Default constructor.
        /// Base constructor requires a name and assembly to locate web service classes. 
        /// </summary>
        public AppHost()
            : base("eps", typeof(AppHost).Assembly)
        {    }

        static AppHost()
        {        /*    ServiceStack.Licensing.RegisterLicense(@"");

            */
        }
           public override void Configure(Container container)
        {
            base.SetConfig(new HostConfig
            {
                DefaultContentType = MimeTypes.Json,
                ReturnsInnerException = true,
                EnableFeatures = Feature.All.Remove(Feature.Metadata)

            });
       
            JsConfig.EmitCamelCaseNames = true;
            JsConfig.ExcludeTypeInfo = true;
            JsConfig.EscapeUnicode = true;

            Plugins.Add(new SwaggerFeature() { UseBootstrapTheme = true, UseCamelCaseModelPropertyNames = false });
            Plugins.Add(new CorsFeature(allowedHeaders: "Content-Type, Authorization"));
        }
  
    }


    [Route("/metadata/{cmds*}", "GET")]
    public class RedirectToSwaggerRequest : IReturnVoid
    {
        public string cmds { get; set; }
    }

    [Restrict(VisibleLocalhostOnly = true)]
    public class MetadataService : Service
    {
        public void Get(RedirectToSwaggerRequest request)
        {
            base.Response.Redirect("/swagger-ui");
        }
    }

}



namespace test.service.model
{
    public class Customer
    {
        [ApiMember(Name = "displayName", Description = "The display name for the entity", ParameterType = "body", DataType = "string", IsRequired = true)]
        public string displayName { get; set; }
        [ApiMember(Name = "description", Description = "The description of the entity", ParameterType = "body", DataType = "string", IsRequired = false)]
        public string description { get; set; }
        [ApiMember(Name = "customerCode", Description = "Unique Code of the customer", ParameterType = "body", DataType = "string", IsRequired = true)]
        public string customerCode { get; set; }
        [ApiMember(Name = "reasonForCancel", Description = "The reason given for canceling service", ParameterType = "body", DataType = "string", IsRequired = false)]
        public string reasonForCancel { get; set; }
        [ApiMember(Name = "contactEmail", Description = "The email address of the main contact for the company", ParameterType = "body", DataType = "string", IsRequired = false)]
        public string contactEmail { get; set; }
        [ApiMember(Name = "contactPhone", Description = "The phone number of the main contact for the company", ParameterType = "body", DataType = "string", IsRequired = false)]
        public string contactPhone { get; set; }
        [ApiMember(Name = "contactName", Description = "The CN name of the main contact for the company", ParameterType = "body", DataType = "string", IsRequired = false)]
        public string contactName { get; set; }
        [ApiMember(Name = "signupDomain", Description = "The domain the customer entered into the system through (the resellers domain)", ParameterType = "body", DataType = "string", IsRequired = true)]
        public string signupDomain { get; set; }
    }

    public class BaseResponse
    {
        public bool success { get; set; }
        public string message { get; set; }
    }

    [Route("/Test/CustomersResponse", "POST")]
    public class TestCustomersRequest : IReturn<TestCustomersResponse>
    {
        public string nameStartsWith { get; set; }
    }

    public class TestCustomersResponse : BaseResponse
    {
        public List<Customer> Customers { get; set; }
    }
    [Route("/Test/ListOfCustomers", "POST")]
    public class TestCustomersWithListRequest : IReturn<List<Customer>>
    {
        public string nameStartsWith { get; set; }
    }


    public class TestService : Service
    {
        public TestCustomersResponse Post(TestCustomersRequest request)
        {
            return new TestCustomersResponse();
        }
        public List<Customer> Post(TestCustomersWithListRequest request)
        {
            return new List<Customer>();
        }

    }



}