testing

DifferentialDependsOnFieldSpecification.php
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			<?php

			final class DifferentialDependsOnFieldSpecification
			extends DifferentialFieldSpecification {

			public function shouldAppearOnRevisionView() {
			return true;
			}

			public function getRequiredHandlePHIDsForRevisionView() {
			return $this->getDependentRevisionPHIDs();
			}

			public function renderLabelForRevisionView() {
			return 'Depends On:';
			}

			public function renderValueForRevisionView() {
			$revision_phids = $this->getDependentRevisionPHIDs();
			if (!$revision_phids) {
			return null;
			}

			$links = array();
			foreach ($revision_phids as $revision_phids) {
			$links[] = $this->getHandle($revision_phids)->renderLink();
			}

			return phutil_safe_html(implode('<br />', $links));
			}

			private function getDependentRevisionPHIDs() {
			return PhabricatorEdgeQuery::loadDestinationPHIDs(
			$this->getRevision()->getPHID(),
			PhabricatorEdgeConfig::TYPE_DREV_DEPENDS_ON_DREV);
			}

			}