theming – Adds a target blank to a href in a custom Drupal 8 module


How to add target = "blank" to a href in a custom Drupal 8 module? Below, I have the image being wrapped by the uri. I do not know how to add target = blank & # 39;

        $ element[$delta] = table (
& # 39; # theme & # 39; => & # 39; image_formatter & # 39 ;,
& # 39; # item & # 39; => $ item,
& # 39; # image_style & # 39; => & # 39;
& # 39; # url & # 39; => $ uri,
)