isReplyMarkup

isReplyMarkup!ReplyMarkup.expect!true;
isReplyMarkup!InlineKeyboardMarkup.expect!true;
isReplyMarkup!ReplyKeyboardMarkup.expect!true;
isReplyMarkup!ReplyKeyboardRemove.expect!true;
isReplyMarkup!ForceReply.expect!true;
isReplyMarkup!string.expect!false;
isReplyMarkup!int.expect!false;
isReplyMarkup!bool.expect!false;
isReplyMarkup!(Algebraic!(InlineKeyboardMarkup, ReplyKeyboardMarkup, ReplyKeyboardRemove)).expect!false;