<?php

namespace Drupal\example;

use Symfony\Component\EventDispatcher\Event;

class ExampleEvent extends Event
{
    protected $value;

    public function __construct($value)
    {
        $this->value = $value;
    }

    public function getValue()
    {
        return $this->value;
    }

    public function setValue($value)
    {
        $this->value = $value;
    }
}