fix: some build & linter warnings

Examples/JoinHiderBot/Program.cs

@@ -1,17 +1,18 @@
 using System;
+using JoinHiderBot.forms;
 using TelegramBotBase.Builder;
 
 namespace JoinHiderBot
 {
-    class Program
+    internal class Program
     {
-        static void Main(string[] args)
+        private static void Main(string[] args)
         {
 
-            String apiKey = "";
+            var apiKey = "";
 
             var bot = BotBaseBuilder.Create()
-                                    .QuickStart<forms.Start>(apiKey)
+                                    .QuickStart<Start>(apiKey)
                                     .Build();
 
             bot.Start();

Examples/JoinHiderBot/forms/GroupManageForm.cs

@@ -1,7 +1,5 @@
-using System;
-using System.Collections.Generic;
-using System.Text;
-using System.Threading.Tasks;
+using System.Threading.Tasks;
+using Telegram.Bot.Types.Enums;
 using TelegramBotBase.Args;
 using TelegramBotBase.Form;
 
@@ -12,13 +10,13 @@ namespace JoinHiderBot.forms
 
         public override async Task OnMemberChanges(MemberChangeEventArgs e)
         {
-            if (e.Type != Telegram.Bot.Types.Enums.MessageType.ChatMembersAdded && e.Type != Telegram.Bot.Types.Enums.MessageType.ChatMemberLeft)
+            if (e.Type != MessageType.ChatMembersAdded && e.Type != MessageType.ChatMemberLeft)
                 return;
 
 
             var m = e.Result.Message;
 
-            await this.Device.DeleteMessage(m);
+            await Device.DeleteMessage(m);
         }
 
     }

Examples/JoinHiderBot/forms/Start.cs

@@ -1,7 +1,4 @@
-using System;
-using System.Collections.Generic;
-using System.Text;
-using System.Threading.Tasks;
+using System.Threading.Tasks;
 using TelegramBotBase.Base;
 using TelegramBotBase.Form;
 
@@ -11,7 +8,7 @@ namespace JoinHiderBot.forms
     {
         public override async Task<bool> Open(MessageResult e)
         {
-            await this.Device.Send("This bot works only in groups.");
+            await Device.Send("This bot works only in groups.");
 
             return true;
         }
@@ -20,7 +17,7 @@ namespace JoinHiderBot.forms
         {
             var gmf = new GroupManageForm();
 
-            await this.NavigateTo(gmf);
+            await NavigateTo(gmf);
 
             return true;
         }