: str_replace(): Passing null to parameter #2 ($replace) of type array|string is deprecated in
namespace Yoast\WP\SEO\User_Meta\Domain;
* This interface describes an additional contactmethod.
interface Additional_Contactmethod_Interface {
* Returns the key of the contactmethod.
public function get_key(): string;
* Returns the label of the contactmethod field.
public function get_label(): string;