HeraldStateReasons.php
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	<?php

	abstract class HeraldStateReasons extends Phobject {

	abstract public function explainReason($reason);

	final public static function getAllReasons() {
	return id(new PhutilClassMapQuery())
	->setAncestorClass(__CLASS__)
	->execute();
	}

	final public static function getExplanation($reason) {
	$reasons = self::getAllReasons();

	foreach ($reasons as $reason_implementation) {
	$explanation = $reason_implementation->explainReason($reason);
	if ($explanation !== null) {
	return $explanation;
	}
	}

	return pht('Unknown reason ("%s").', $reason);
	}

	}