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vendor
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maatwebsite
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excel
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src
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Events
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Event.php
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<?php namespace Maatwebsite\Excel\Events; abstract class Event { /** * @return object */ abstract public function getConcernable(); /** * @return mixed */ abstract public function getDelegate(); /** * @param string $concern * @return bool */ public function appliesToConcern(string $concern): bool { return $this->getConcernable() instanceof $concern; } }