New message caption; pass null to copy message without caption. Ignored if replace_caption is false.
Optional new_True, if new caption must be shown above the media; otherwise, new caption must be shown below the media; not supported in secret chats. Ignored if replace_caption is false.
Optional replace_True, if media caption of the message copy needs to be replaced. Ignored if send_copy is false.
Optional send_True, if content of the message needs to be copied without reference to the original sender. Always true if the message is forwarded to a secret chat or is local. Use messageProperties.can_be_saved and messageProperties.can_be_copied_to_secret_chat to check whether the message is suitable.
Options to be used when a message content is copied without reference to the original sender. Service messages, messages with messageInvoice, messagePaidMedia, messageGiveaway, or messageGiveawayWinners content can't be copied.