// This method gets called by the runtime. Use this method to add services to the container.
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddControllers();

            services.AddSwaggerGen(c => {

                // sepcify our operation filter here.  
                c.OperationFilter<AddCommonParameOperationFilter>();

                c.SwaggerDoc("api", new OpenApiInfo { Title = "Web API", Description = "WebAPI 사용법\r\nId : 43, charId : 282362182980730885"
                , Contact = new OpenApiContact { Name = "Minecraft", Email = string.Empty
                , Url = new Uri("http://localhost:1790") }
                });
            });
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();

                app.UseSwagger();
                app.UseSwaggerUI(c => {
                    c.SwaggerEndpoint("api/swagger.json", "Api Documents");
                });
            }
            else
            {
                app.UseExceptionHandler("/Home/Error");
                app.UseHsts();
            }
        }