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

The chat is a private or secret chat, which can be reported using the method reportChat, or the other user can be blocked using the method setMessageSenderBlockList, or the other user can be added to the contact list using the method addContact. If the chat is a private chat with a user with an emoji status, then a notice about emoji status usage must be shown.

NameTypeDescription
can_unarchiveboolIf true, the chat was automatically archived and can be moved back to the main chat list using addChatToList simultaneously with setting chat notification settings to default using setChatNotificationSettings.
distancenumberIf non-negative, the current user was found by the other user through searchChatsNearby and this is the distance between the users.

More details on telegram's documentation.