Add missing getter in StopPoll

telegrambots-meta/src/main/java/org/telegram/telegrambots/meta/api/methods/polls/StopPoll.java

@@ -60,6 +60,15 @@ public class StopPoll extends BotApiMethod<Poll> {
         return this;
     }
 
+    public Integer getMessageId() {
+        return messageId;
+    }
+
+    public StopPoll setMessageId(Integer messageId) {
+        this.messageId = messageId;
+        return this;
+    }
+
     @Override
     public String getMethod() {
         return PATH;