Event.php

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<?php
namespace Magento\Framework;

class Event extends \Magento\Framework\DataObject
{
    protected $_observers;

    public function __construct(array $data = [])
    {
        $this->_observers = new \Magento\Framework\Event\Observer\Collection();
        parent::__construct($data);
    }

    public function getObservers()
    {
        return $this->_observers;
    }

    public function addObserver(\Magento\Framework\Event\Observer $observer)
    {
        $this->getObservers()->addObserver($observer);
        return $this;
    }

    public function removeObserverByName($observerName)
    {
        $this->getObservers()->removeObserverByName($observerName);
        return $this;
    }

    public function dispatch()
    {
        $this->getObservers()->dispatch($this);
        return $this;
    }

    public function getName()
    {
        return $this->_data['name'] ?? null;
    }

    public function setName($data)
    {
        $this->_data['name'] = $data;
        return $this;
    }

    public function getBlock()
    {
        return $this->_getData('block');
    }
}