: str_replace(): Passing null to parameter #2 ($replace) of type array|string is deprecated in
namespace Nextend\Framework\Form\Insert;
use Nextend\Framework\Form\ContainedInterface;
use Nextend\Framework\Form\ContainerInterface;
abstract class AbstractInsert {
* @var ContainedInterface
* AbstractInsert constructor.
* @param ContainedInterface $at
public function __construct($at) {
* @param ContainedInterface $element
* @return ContainerInterface Returns the parent
public abstract function insert($element);