public void ConfigureServices(IServiceCollection services)
{
    services.AddDbContext<TodoContext>(opt => opt.UseInMemoryDatabase("TodoList"));
    services.AddMvc();

    // Register the Swagger generator, defining one or more Swagger documents
      services.AddSwaggerGen(options =>
      {
                //options.DescribeAllEnumsAsStrings();
                options.SwaggerDoc("v1", new Swashbuckle.AspNetCore.Swagger.Info
                {
                    Title = "Azure Adapter Api - Catalog HTTP API",
                    Version = "v1",
                    Description = "The Catalog Microservice HTTP API. This is a Data-Driven/CRUD microservice sample",
                    TermsOfService = "Terms Of Service"
               });
      });
}

            app.UseSwagger().UseSwaggerUI(c =>
            {
                c.SwaggerEndpoint("/swagger/v1/swagger.json", "My API V1");
            });