HelloWorld.php

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<?php
 
declare(strict_types=1);
 
use ILIAS\UI\Implementation\Component\ComponentHelper;
use ILIAS\UI\Component\Component;
 
class HelloWorld implements Component
{
    use ComponentHelper;
 
    protected $greeting = 'Hello World!';
 
    public function withGreeting(string $greeting): self
    {
        $clone = clone $this;
        $clone->greeting = $greeting;
        return $clone;
    }
 
    public function getGreeting(): string
    {
        return $this->greeting;
    }
}