code: @ObjectiveCName("sendMessageWithPeer:withText:withMarkdownText:")
      public void sendMessage(@NotNull Peer peer, @NotNull String text, @Nullable String markDownText) {
          sendMessage(peer, text, markDownText, null, false);
      }
docs: Send Markdown Message
  
  @param peer         destination peer
  @param text         message text
  @param markDownText message markdown text