chatType property
Optional. Type of the chat from which the inline query was sent. Can be either "sender" for a private chat with the inline query sender, "private", "group", "supergroup", or "channel". The chat type should be always known for requests sent from official clients and most third-party clients, unless the request was sent from a secret chat
Implementation
@JsonKey(name: 'chat_type')
ChatType? get chatType;