PhabricatorGuidanceEngineExtension.php
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	<?php

	abstract class PhabricatorGuidanceEngineExtension
	extends Phobject {

	final public function getExtensionKey() {
	return $this->getPhobjectClassConstant('GUIDANCEKEY', 64);
	}

	abstract public function canGenerateGuidance(
	PhabricatorGuidanceContext $context);

	abstract public function generateGuidance(
	PhabricatorGuidanceContext $context);

	public function didGenerateGuidance(
	PhabricatorGuidanceContext $context,
	array $guidance) {
	return $guidance;
	}

	final protected function newGuidance($key) {
	return id(new PhabricatorGuidanceMessage())
	->setKey($key);
	}

	final protected function newWarning($key) {
	return $this->newGuidance($key)
	->setSeverity(PhabricatorGuidanceMessage::SEVERITY_WARNING);
	}

	final public static function getAllExtensions() {
	return id(new PhutilClassMapQuery())
	->setAncestorClass(__CLASS__)
	->setUniqueMethod('getExtensionKey')
	->execute();
	}

	}