View Source ExTDLib.Object.PushMessageContentSticker (ExTDLib v0.0.4)

A message with a sticker.

Name	Type	Description
sticker	sticker	Message content; may be null.
emoji	string	Emoji corresponding to the sticker; may be empty.
is_pinned	bool	True, if the message is a pinned message with the specified content.

More details on telegram's documentation.