LayoutArgumentObjectUpdater.php

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<?php
namespace Magento\Framework\View;

class LayoutArgumentObjectUpdater implements \Magento\Framework\View\Layout\Argument\UpdaterInterface
{
    public function update($argument)
    {
        $calls = $argument->getUpdaterCall();
        $calls[] = 'updater call';
        $argument->setUpdaterCall($calls);
        return $argument;
    }
}