[Fix] Fix for merge request #10
[Fix] Fix for merge request #10

The previous merge request #10 did accidentally not include the interface, it was still broken.
antoniomadonna/telegram-bot-sdk,ihoru/telegram-bot-sdk,moazam1/telegram-bot-sdk,m4h4n/telegram-bot-sdk,masterweb121/telegram-bot-sdk,halaei/telegram-bot,jonnywilliamson/telegram-bot-sdk,DmitryNek/telegram-bot-sdk,Mirocow/telegram-bot-sdk,irazasyed/telegram-bot-sdk,suhindra/telegram-bot-sdk,mohsenHa/telegram-bot-sdk,nandadotexe/telegram-bot-sdk