Target chat.
The content of the message to be sent.
If not 0, the message thread identifier in which the message will be sent.
Options to be used to send the message; pass null to use default options.
Markup for replying to the message; pass null if none; for bots only.
Information about the message or story to be replied; pass null if none.
Sends a message. Returns the sent message. Request type for Tdjson#sendMessage.