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<?php
namespace Chain;
class AbstractHandler implements HandlerInterface
{
private ?HandlerInterface $next;
public function __construct()
$this->next = null;
}
public function setNext(HandlerInterface $handler): HandlerInterface
$this->next = $handler;
return $handler;
public function handle(ContextInterface $context)
if ($this->next) {
return $this->next->handle($context);
phlllpe /
chain
