Function deltachat::imex::import_backup

async fn import_backup(
    context: &Context,
    backup_to_import: &Path,
    passphrase: String
) -> Result<()>

Imports backup into the currently open database.

The contents of the currently open database will be lost.

passphrase is the passphrase used to open backup database. If backup is unencrypted, pass empty string here.