oliverdavies.uk/modules/opd_presentations/src/Collection/EventCollection.php

<?php

declare(strict_types=1);

namespace Drupal\opd_presentations\Collection;

use Drupal\paragraphs\ParagraphInterface;

/**
 * @implements \IteratorAggregate<ParagraphInterface>
 */
readonly final class EventCollection implements \IteratorAggregate {

 /**
  * @param ParagraphInterface[] $events
  */
  public function __construct(private array $events) {
  }

  public function first(): ParagraphInterface {
    return array_values($this->events)[0];
  }

  public function getIterator(): \Traversable {
    return new \ArrayIterator($this->events);
  }

}