Optional
clear_True, if a chat message draft must be deleted.
Options to be used for generation of a link preview; may be null if none; pass null to use default link preview options.
Formatted text to be sent; 0-getOption("message_text_length_max") characters. Only Bold, Italic, Underline, Strikethrough, Spoiler, CustomEmoji, BlockQuote, ExpandableBlockQuote, Code, Pre, PreCode, TextUrl and MentionName entities are allowed to be specified manually.
The content of a message to send. Subtype of InputMessageContent.