Additional documentation for get_comment_meta

[nprasath002]

the documentation for get_comment_meta in comment.php can be improved.
The metakey and the single value are optional.

[dd32]

The $meta_key is not optional at present with the function as-is. You can however pass a blank string to it to retrieve all meta.

Setting a default on $key would however allow that.

function get_comment_meta($comment_id, $key, $single = false) {
   return get_metadata('comment', $comment_id, $key, $single);
}