Make misc get*ApplicationClass[Name]() calls return ::class constant instead of string

Summary:
`::class` is available since PHP 5.5 (5.5 is a minimal requirement by Phorge): https://www.php.net/manual/en/language.oop5.basic.php#language.oop5.basic.class.class
It makes finding code using IDEs easier; see discussion in D25500.

Thus replace all string return values with returning the `::class` constant instead, with one exception: 'PhabricatorSettingApplication' in `PhabricatorUserPreferencesSearchEngine.php` does not exist and makes arc lint fail so this string remained unchanged.

Also note that two occurrences were wrapped in `pht()` for reasons I do not know.

List of functions whose return value get updated in this code change:
* getApplicationClassName()
* getAdapterApplicationClass()
* getDatasourceApplicationClass()
* getEditorApplicationClass()
* getEngineApplicationClass()
* getPHIDTypeApplicationClass()
* getQueryApplicationClass()

cf. T15158

Test Plan: Too broad - click around, basically.

Reviewers: O1 Blessed Committers, valerio.bozzolan

Reviewed By: O1 Blessed Committers, valerio.bozzolan

Subscribers: tobiaswiese, valerio.bozzolan, Matthew, Cigaryno

Maniphest Tasks: T15158

Differential Revision: https://we.phorge.it/D25524

src/applications/almanac/editor/AlmanacBindingEditEngine.php

@@ -36,7 +36,7 @@ final class AlmanacBindingEditEngine
   }
 
   public function getEngineApplicationClass() {
-    return 'PhabricatorAlmanacApplication';
+    return PhabricatorAlmanacApplication::class;
   }
 
   protected function newEditableObject() {

src/applications/almanac/editor/AlmanacDeviceEditEngine.php

@@ -22,7 +22,7 @@ final class AlmanacDeviceEditEngine
   }
 
   public function getEngineApplicationClass() {
-    return 'PhabricatorAlmanacApplication';
+    return PhabricatorAlmanacApplication::class;
   }
 
   protected function newEditableObject() {

src/applications/almanac/editor/AlmanacEditor.php

@@ -4,7 +4,7 @@ abstract class AlmanacEditor
   extends PhabricatorApplicationTransactionEditor {
 
   public function getEditorApplicationClass() {
-    return 'PhabricatorAlmanacApplication';
+    return PhabricatorAlmanacApplication::class;
   }
 
 }

src/applications/almanac/editor/AlmanacInterfaceEditEngine.php

@@ -36,7 +36,7 @@ final class AlmanacInterfaceEditEngine
   }
 
   public function getEngineApplicationClass() {
-    return 'PhabricatorAlmanacApplication';
+    return PhabricatorAlmanacApplication::class;
   }
 
   protected function newEditableObject() {

src/applications/almanac/editor/AlmanacNamespaceEditEngine.php

@@ -22,7 +22,7 @@ final class AlmanacNamespaceEditEngine
   }
 
   public function getEngineApplicationClass() {
-    return 'PhabricatorAlmanacApplication';
+    return PhabricatorAlmanacApplication::class;
   }
 
   protected function newEditableObject() {

src/applications/almanac/editor/AlmanacNetworkEditEngine.php

@@ -22,7 +22,7 @@ final class AlmanacNetworkEditEngine
   }
 
   public function getEngineApplicationClass() {
-    return 'PhabricatorAlmanacApplication';
+    return PhabricatorAlmanacApplication::class;
   }
 
   protected function newEditableObject() {

src/applications/almanac/editor/AlmanacPropertyEditEngine.php

@@ -35,7 +35,7 @@ abstract class AlmanacPropertyEditEngine
   }
 
   public function getEngineApplicationClass() {
-    return 'PhabricatorAlmanacApplication';
+    return PhabricatorAlmanacApplication::class;
   }
 
   protected function newEditableObject() {

src/applications/almanac/editor/AlmanacServiceEditEngine.php

@@ -33,7 +33,7 @@ final class AlmanacServiceEditEngine
   }
 
   public function getEngineApplicationClass() {
-    return 'PhabricatorAlmanacApplication';
+    return PhabricatorAlmanacApplication::class;
   }
 
   protected function newEditableObject() {

src/applications/almanac/phid/AlmanacBindingPHIDType.php

@@ -13,7 +13,7 @@ final class AlmanacBindingPHIDType extends PhabricatorPHIDType {
   }
 
   public function getPHIDTypeApplicationClass() {
-    return 'PhabricatorAlmanacApplication';
+    return PhabricatorAlmanacApplication::class;
   }
 
   protected function buildQueryForObjects(

src/applications/almanac/phid/AlmanacDevicePHIDType.php

@@ -13,7 +13,7 @@ final class AlmanacDevicePHIDType extends PhabricatorPHIDType {
   }
 
   public function getPHIDTypeApplicationClass() {
-    return 'PhabricatorAlmanacApplication';
+    return PhabricatorAlmanacApplication::class;
   }
 
   protected function buildQueryForObjects(

src/applications/almanac/phid/AlmanacInterfacePHIDType.php

@@ -13,7 +13,7 @@ final class AlmanacInterfacePHIDType extends PhabricatorPHIDType {
   }
 
   public function getPHIDTypeApplicationClass() {
-    return 'PhabricatorAlmanacApplication';
+    return PhabricatorAlmanacApplication::class;
   }
 
   protected function buildQueryForObjects(

src/applications/almanac/phid/AlmanacNamespacePHIDType.php

@@ -13,7 +13,7 @@ final class AlmanacNamespacePHIDType extends PhabricatorPHIDType {
   }
 
   public function getPHIDTypeApplicationClass() {
-    return 'PhabricatorAlmanacApplication';
+    return PhabricatorAlmanacApplication::class;
   }
 
   protected function buildQueryForObjects(

src/applications/almanac/phid/AlmanacNetworkPHIDType.php

@@ -13,7 +13,7 @@ final class AlmanacNetworkPHIDType extends PhabricatorPHIDType {
   }
 
   public function getPHIDTypeApplicationClass() {
-    return 'PhabricatorAlmanacApplication';
+    return PhabricatorAlmanacApplication::class;
   }
 
   protected function buildQueryForObjects(

src/applications/almanac/phid/AlmanacServicePHIDType.php

@@ -13,7 +13,7 @@ final class AlmanacServicePHIDType extends PhabricatorPHIDType {
   }
 
   public function getPHIDTypeApplicationClass() {
-    return 'PhabricatorAlmanacApplication';
+    return PhabricatorAlmanacApplication::class;
   }
 
   protected function buildQueryForObjects(

src/applications/almanac/query/AlmanacBindingSearchEngine.php

@@ -8,7 +8,7 @@ final class AlmanacBindingSearchEngine
   }
 
   public function getApplicationClassName() {
-    return 'PhabricatorAlmanacApplication';
+    return PhabricatorAlmanacApplication::class;
   }
 
   public function newQuery() {

src/applications/almanac/query/AlmanacDeviceQuery.php

@@ -148,7 +148,7 @@ final class AlmanacDeviceQuery
   }
 
   public function getQueryApplicationClass() {
-    return 'PhabricatorAlmanacApplication';
+    return PhabricatorAlmanacApplication::class;
   }
 
 }

src/applications/almanac/query/AlmanacDeviceSearchEngine.php

@@ -8,7 +8,7 @@ final class AlmanacDeviceSearchEngine
   }
 
   public function getApplicationClassName() {
-    return 'PhabricatorAlmanacApplication';
+    return PhabricatorAlmanacApplication::class;
   }
 
   public function newQuery() {

src/applications/almanac/query/AlmanacInterfaceQuery.php

@@ -169,7 +169,7 @@ final class AlmanacInterfaceQuery
   }
 
   public function getQueryApplicationClass() {
-    return 'PhabricatorAlmanacApplication';
+    return PhabricatorAlmanacApplication::class;
   }
 
   public function getBuiltinOrders() {

src/applications/almanac/query/AlmanacInterfaceSearchEngine.php

@@ -8,7 +8,7 @@ final class AlmanacInterfaceSearchEngine
   }
 
   public function getApplicationClassName() {
-    return 'PhabricatorAlmanacApplication';
+    return PhabricatorAlmanacApplication::class;
   }
 
   public function newQuery() {

src/applications/almanac/query/AlmanacNamespaceQuery.php

@@ -92,7 +92,7 @@ final class AlmanacNamespaceQuery
   }
 
   public function getQueryApplicationClass() {
-    return 'PhabricatorAlmanacApplication';
+    return PhabricatorAlmanacApplication::class;
   }
 
 }

src/applications/almanac/query/AlmanacNamespaceSearchEngine.php

@@ -8,7 +8,7 @@ final class AlmanacNamespaceSearchEngine
   }
 
   public function getApplicationClassName() {
-    return 'PhabricatorAlmanacApplication';
+    return PhabricatorAlmanacApplication::class;
   }
 
   public function newQuery() {

src/applications/almanac/query/AlmanacNetworkQuery.php

@@ -64,7 +64,7 @@ final class AlmanacNetworkQuery
   }
 
   public function getQueryApplicationClass() {
-    return 'PhabricatorAlmanacApplication';
+    return PhabricatorAlmanacApplication::class;
   }
 
 }

src/applications/almanac/query/AlmanacNetworkSearchEngine.php

@@ -8,7 +8,7 @@ final class AlmanacNetworkSearchEngine
   }
 
   public function getApplicationClassName() {
-    return 'PhabricatorAlmanacApplication';
+    return PhabricatorAlmanacApplication::class;
   }
 
   public function newQuery() {

src/applications/almanac/query/AlmanacPropertyQuery.php

@@ -99,7 +99,7 @@ final class AlmanacPropertyQuery
   }
 
   public function getQueryApplicationClass() {
-    return 'PhabricatorAlmanacApplication';
+    return PhabricatorAlmanacApplication::class;
   }
 
 }

src/applications/almanac/query/AlmanacQuery.php

@@ -55,7 +55,7 @@ abstract class AlmanacQuery
   }
 
   public function getQueryApplicationClass() {
-    return 'PhabricatorAlmanacApplication';
+    return PhabricatorAlmanacApplication::class;
   }
 
 }

src/applications/almanac/query/AlmanacServiceSearchEngine.php

@@ -8,7 +8,7 @@ final class AlmanacServiceSearchEngine
   }
 
   public function getApplicationClassName() {
-    return 'PhabricatorAlmanacApplication';
+    return PhabricatorAlmanacApplication::class;
   }
 
   public function newQuery() {

src/applications/almanac/typeahead/AlmanacInterfaceDatasource.php

@@ -12,7 +12,7 @@ final class AlmanacInterfaceDatasource
   }
 
   public function getDatasourceApplicationClass() {
-    return 'PhabricatorAlmanacApplication';
+    return PhabricatorAlmanacApplication::class;
   }
 
   public function loadResults() {

src/applications/almanac/typeahead/AlmanacServiceDatasource.php

@@ -12,7 +12,7 @@ final class AlmanacServiceDatasource
   }
 
   public function getDatasourceApplicationClass() {
-    return 'PhabricatorAlmanacApplication';
+    return PhabricatorAlmanacApplication::class;
   }
 
   public function loadResults() {

src/applications/almanac/typeahead/AlmanacServiceTypeDatasource.php

@@ -12,7 +12,7 @@ final class AlmanacServiceTypeDatasource
   }
 
   public function getDatasourceApplicationClass() {
-    return 'PhabricatorAlmanacApplication';
+    return PhabricatorAlmanacApplication::class;
   }
 
   public function loadResults() {

src/applications/audit/editor/PhabricatorAuditEditor.php

@@ -22,7 +22,7 @@ final class PhabricatorAuditEditor
   }
 
   public function getEditorApplicationClass() {
-    return 'PhabricatorDiffusionApplication';
+    return PhabricatorDiffusionApplication::class;
   }
 
   public function getEditorObjectsDescription() {

src/applications/audit/query/DiffusionInternalCommitSearchEngine.php

@@ -8,7 +8,7 @@ final class DiffusionInternalCommitSearchEngine
   }
 
   public function getApplicationClassName() {
-    return 'PhabricatorDiffusionApplication';
+    return PhabricatorDiffusionApplication::class;
   }
 
   public function newQuery() {

src/applications/audit/query/PhabricatorCommitSearchEngine.php

@@ -8,7 +8,7 @@ final class PhabricatorCommitSearchEngine
   }
 
   public function getApplicationClassName() {
-    return 'PhabricatorDiffusionApplication';
+    return PhabricatorDiffusionApplication::class;
   }
 
   public function newQuery() {

src/applications/auth/editor/PhabricatorAuthContactNumberEditEngine.php

@@ -22,7 +22,7 @@ final class PhabricatorAuthContactNumberEditEngine
   }
 
   public function getEngineApplicationClass() {
-    return 'PhabricatorAuthApplication';
+    return PhabricatorAuthApplication::class;
   }
 
   protected function newEditableObject() {

src/applications/auth/editor/PhabricatorAuthContactNumberEditor.php

@@ -4,7 +4,7 @@ final class PhabricatorAuthContactNumberEditor
   extends PhabricatorApplicationTransactionEditor {
 
   public function getEditorApplicationClass() {
-    return 'PhabricatorAuthApplication';
+    return PhabricatorAuthApplication::class;
   }
 
   public function getEditorObjectsDescription() {

src/applications/auth/editor/PhabricatorAuthFactorProviderEditEngine.php

@@ -24,7 +24,7 @@ final class PhabricatorAuthFactorProviderEditEngine
   }
 
   public function getEngineApplicationClass() {
-    return 'PhabricatorAuthApplication';
+    return PhabricatorAuthApplication::class;
   }
 
   public function setProviderFactor(PhabricatorAuthFactor $factor) {

src/applications/auth/editor/PhabricatorAuthFactorProviderEditor.php

@@ -4,7 +4,7 @@ final class PhabricatorAuthFactorProviderEditor
   extends PhabricatorApplicationTransactionEditor {
 
   public function getEditorApplicationClass() {
-    return 'PhabricatorAuthApplication';
+    return PhabricatorAuthApplication::class;
   }
 
   public function getEditorObjectsDescription() {

src/applications/auth/editor/PhabricatorAuthMessageEditEngine.php

@@ -24,7 +24,7 @@ final class PhabricatorAuthMessageEditEngine
   }
 
   public function getEngineApplicationClass() {
-    return 'PhabricatorAuthApplication';
+    return PhabricatorAuthApplication::class;
   }
 
   public function setMessageType(PhabricatorAuthMessageType $type) {

src/applications/auth/editor/PhabricatorAuthMessageEditor.php

@@ -4,7 +4,7 @@ final class PhabricatorAuthMessageEditor
   extends PhabricatorApplicationTransactionEditor {
 
   public function getEditorApplicationClass() {
-    return 'PhabricatorAuthApplication';
+    return PhabricatorAuthApplication::class;
   }
 
   public function getEditorObjectsDescription() {

src/applications/auth/editor/PhabricatorAuthPasswordEditor.php

@@ -15,7 +15,7 @@ final class PhabricatorAuthPasswordEditor
   }
 
   public function getEditorApplicationClass() {
-    return 'PhabricatorAuthApplication';
+    return PhabricatorAuthApplication::class;
   }
 
   public function getEditorObjectsDescription() {

src/applications/auth/editor/PhabricatorAuthProviderConfigEditor.php

@@ -4,7 +4,7 @@ final class PhabricatorAuthProviderConfigEditor
   extends PhabricatorApplicationTransactionEditor {
 
   public function getEditorApplicationClass() {
-    return 'PhabricatorAuthApplication';
+    return PhabricatorAuthApplication::class;
   }
 
   public function getEditorObjectsDescription() {

src/applications/auth/editor/PhabricatorAuthSSHKeyEditor.php

@@ -15,7 +15,7 @@ final class PhabricatorAuthSSHKeyEditor
   }
 
   public function getEditorApplicationClass() {
-    return 'PhabricatorAuthApplication';
+    return PhabricatorAuthApplication::class;
   }
 
   public function getEditorObjectsDescription() {

src/applications/auth/phid/PhabricatorAuthAuthFactorPHIDType.php

@@ -13,7 +13,7 @@ final class PhabricatorAuthAuthFactorPHIDType extends PhabricatorPHIDType {
   }
 
   public function getPHIDTypeApplicationClass() {
-    return 'PhabricatorAuthApplication';
+    return PhabricatorAuthApplication::class;
   }
 
   protected function buildQueryForObjects(

src/applications/auth/phid/PhabricatorAuthAuthFactorProviderPHIDType.php

@@ -14,7 +14,7 @@ final class PhabricatorAuthAuthFactorProviderPHIDType
   }
 
   public function getPHIDTypeApplicationClass() {
-    return 'PhabricatorAuthApplication';
+    return PhabricatorAuthApplication::class;
   }
 
   protected function buildQueryForObjects(

src/applications/auth/phid/PhabricatorAuthAuthProviderPHIDType.php

@@ -13,7 +13,7 @@ final class PhabricatorAuthAuthProviderPHIDType extends PhabricatorPHIDType {
   }
 
   public function getPHIDTypeApplicationClass() {
-    return 'PhabricatorAuthApplication';
+    return PhabricatorAuthApplication::class;
   }
 
   protected function buildQueryForObjects(

src/applications/auth/phid/PhabricatorAuthChallengePHIDType.php

@@ -13,7 +13,7 @@ final class PhabricatorAuthChallengePHIDType extends PhabricatorPHIDType {
   }
 
   public function getPHIDTypeApplicationClass() {
-    return 'PhabricatorAuthApplication';
+    return PhabricatorAuthApplication::class;
   }
 
   protected function buildQueryForObjects(

src/applications/auth/phid/PhabricatorAuthContactNumberPHIDType.php

@@ -14,7 +14,7 @@ final class PhabricatorAuthContactNumberPHIDType
   }
 
   public function getPHIDTypeApplicationClass() {
-    return 'PhabricatorAuthApplication';
+    return PhabricatorAuthApplication::class;
   }
 
   protected function buildQueryForObjects(

src/applications/auth/phid/PhabricatorAuthInvitePHIDType.php

@@ -13,7 +13,7 @@ final class PhabricatorAuthInvitePHIDType extends PhabricatorPHIDType {
   }
 
   public function getPHIDTypeApplicationClass() {
-    return 'PhabricatorAuthApplication';
+    return PhabricatorAuthApplication::class;
   }
 
   protected function buildQueryForObjects(

src/applications/auth/phid/PhabricatorAuthMessagePHIDType.php

@@ -13,7 +13,7 @@ final class PhabricatorAuthMessagePHIDType extends PhabricatorPHIDType {
   }
 
   public function getPHIDTypeApplicationClass() {
-    return 'PhabricatorAuthApplication';
+    return PhabricatorAuthApplication::class;
   }
 
   protected function buildQueryForObjects(

src/applications/auth/phid/PhabricatorAuthPasswordPHIDType.php

@@ -13,7 +13,7 @@ final class PhabricatorAuthPasswordPHIDType extends PhabricatorPHIDType {
   }
 
   public function getPHIDTypeApplicationClass() {
-    return 'PhabricatorAuthApplication';
+    return PhabricatorAuthApplication::class;
   }
 
   protected function buildQueryForObjects(

src/applications/auth/phid/PhabricatorAuthSSHKeyPHIDType.php

@@ -14,7 +14,7 @@ final class PhabricatorAuthSSHKeyPHIDType
   }
 
   public function getPHIDTypeApplicationClass() {
-    return 'PhabricatorAuthApplication';
+    return PhabricatorAuthApplication::class;
   }
 
   protected function buildQueryForObjects(

src/applications/auth/phid/PhabricatorAuthSessionPHIDType.php

@@ -14,7 +14,7 @@ final class PhabricatorAuthSessionPHIDType
   }
 
   public function getPHIDTypeApplicationClass() {
-    return 'PhabricatorAuthApplication';
+    return PhabricatorAuthApplication::class;
   }
 
   protected function buildQueryForObjects(

src/applications/auth/query/PhabricatorAuthChallengeQuery.php

@@ -89,7 +89,7 @@ final class PhabricatorAuthChallengeQuery
   }
 
   public function getQueryApplicationClass() {
-    return 'PhabricatorAuthApplication';
+    return PhabricatorAuthApplication::class;
   }
 
 }

src/applications/auth/query/PhabricatorAuthContactNumberQuery.php

@@ -93,7 +93,7 @@ final class PhabricatorAuthContactNumberQuery
   }
 
   public function getQueryApplicationClass() {
-    return 'PhabricatorAuthApplication';
+    return PhabricatorAuthApplication::class;
   }
 
 }

src/applications/auth/query/PhabricatorAuthFactorConfigQuery.php

@@ -121,7 +121,7 @@ final class PhabricatorAuthFactorConfigQuery
   }
 
   public function getQueryApplicationClass() {
-    return 'PhabricatorAuthApplication';
+    return PhabricatorAuthApplication::class;
   }
 
 }

src/applications/auth/query/PhabricatorAuthFactorProviderQuery.php

@@ -84,7 +84,7 @@ final class PhabricatorAuthFactorProviderQuery
   }
 
   public function getQueryApplicationClass() {
-    return 'PhabricatorAuthApplication';
+    return PhabricatorAuthApplication::class;
   }
 
 }

src/applications/auth/query/PhabricatorAuthInviteSearchEngine.php

@@ -8,7 +8,7 @@ final class PhabricatorAuthInviteSearchEngine
   }
 
   public function getApplicationClassName() {
-    return 'PhabricatorAuthApplication';
+    return PhabricatorAuthApplication::class;
   }
 
   public function canUseInPanelContext() {

src/applications/auth/query/PhabricatorAuthMessageQuery.php

@@ -73,7 +73,7 @@ final class PhabricatorAuthMessageQuery
   }
 
   public function getQueryApplicationClass() {
-    return 'PhabricatorAuthApplication';
+    return PhabricatorAuthApplication::class;
   }
 
 }

src/applications/auth/query/PhabricatorAuthPasswordQuery.php

@@ -104,7 +104,7 @@ final class PhabricatorAuthPasswordQuery
   }
 
   public function getQueryApplicationClass() {
-    return 'PhabricatorAuthApplication';
+    return PhabricatorAuthApplication::class;
   }
 
 }

src/applications/auth/query/PhabricatorAuthProviderConfigQuery.php

@@ -80,7 +80,7 @@ final class PhabricatorAuthProviderConfigQuery
   }
 
   public function getQueryApplicationClass() {
-    return 'PhabricatorAuthApplication';
+    return PhabricatorAuthApplication::class;
   }
 
 }

src/applications/auth/query/PhabricatorAuthSSHKeyQuery.php

@@ -128,7 +128,7 @@ final class PhabricatorAuthSSHKeyQuery
   }
 
   public function getQueryApplicationClass() {
-    return 'PhabricatorAuthApplication';
+    return PhabricatorAuthApplication::class;
   }
 
 }

src/applications/auth/query/PhabricatorAuthSSHKeySearchEngine.php

@@ -23,7 +23,7 @@ final class PhabricatorAuthSSHKeySearchEngine
   }
 
   public function getApplicationClassName() {
-    return 'PhabricatorAuthApplication';
+    return PhabricatorAuthApplication::class;
   }
 
   public function newQuery() {

src/applications/auth/query/PhabricatorAuthSessionQuery.php

@@ -107,7 +107,7 @@ final class PhabricatorAuthSessionQuery
   }
 
   public function getQueryApplicationClass() {
-    return 'PhabricatorAuthApplication';
+    return PhabricatorAuthApplication::class;
   }
 
 }

src/applications/auth/query/PhabricatorAuthTemporaryTokenQuery.php

@@ -100,7 +100,7 @@ final class PhabricatorAuthTemporaryTokenQuery
   }
 
   public function getQueryApplicationClass() {
-    return 'PhabricatorAuthApplication';
+    return PhabricatorAuthApplication::class;
   }
 
 }

src/applications/auth/query/PhabricatorExternalAccountIdentifierQuery.php

@@ -84,7 +84,7 @@ final class PhabricatorExternalAccountIdentifierQuery
   }
 
   public function getQueryApplicationClass() {
-    return 'PhabricatorPeopleApplication';
+    return PhabricatorPeopleApplication::class;
   }
 
 }

src/applications/auth/query/PhabricatorExternalAccountQuery.php

@@ -241,7 +241,7 @@ final class PhabricatorExternalAccountQuery
   }
 
   public function getQueryApplicationClass() {
-    return 'PhabricatorPeopleApplication';
+    return PhabricatorPeopleApplication::class;
   }
 
 }

src/applications/badges/editor/PhabricatorBadgesEditEngine.php

@@ -10,7 +10,7 @@ final class PhabricatorBadgesEditEngine
   }
 
   public function getEngineApplicationClass() {
-    return 'PhabricatorBadgesApplication';
+    return PhabricatorBadgesApplication::class;
   }
 
   public function getSummaryHeader() {

src/applications/badges/editor/PhabricatorBadgesEditor.php

@@ -4,7 +4,7 @@ final class PhabricatorBadgesEditor
   extends PhabricatorApplicationTransactionEditor {
 
   public function getEditorApplicationClass() {
-    return 'PhabricatorBadgesApplication';
+    return PhabricatorBadgesApplication::class;
   }
 
   public function getEditorObjectsDescription() {

src/applications/badges/phid/PhabricatorBadgesPHIDType.php

@@ -13,7 +13,7 @@ final class PhabricatorBadgesPHIDType extends PhabricatorPHIDType {
   }
 
   public function getPHIDTypeApplicationClass() {
-    return 'PhabricatorBadgesApplication';
+    return PhabricatorBadgesApplication::class;
   }
 
   protected function buildQueryForObjects(

src/applications/badges/query/PhabricatorBadgesAwardQuery.php

@@ -115,7 +115,7 @@ final class PhabricatorBadgesAwardQuery
   }
 
   public function getQueryApplicationClass() {
-    return 'PhabricatorBadgesApplication';
+    return PhabricatorBadgesApplication::class;
   }
 
 }

src/applications/badges/query/PhabricatorBadgesQuery.php

@@ -77,7 +77,7 @@ final class PhabricatorBadgesQuery
   }
 
   public function getQueryApplicationClass() {
-    return 'PhabricatorBadgesApplication';
+    return PhabricatorBadgesApplication::class;
   }
 
   public function getBuiltinOrders() {

src/applications/badges/query/PhabricatorBadgesSearchEngine.php

@@ -8,7 +8,7 @@ final class PhabricatorBadgesSearchEngine
   }
 
   public function getApplicationClassName() {
-    return 'PhabricatorBadgesApplication';
+    return PhabricatorBadgesApplication::class;
   }
 
   public function newQuery() {

src/applications/badges/typeahead/PhabricatorBadgesDatasource.php

@@ -12,7 +12,7 @@ final class PhabricatorBadgesDatasource
   }
 
   public function getDatasourceApplicationClass() {
-    return 'PhabricatorBadgesApplication';
+    return PhabricatorBadgesApplication::class;
   }
 
   public function loadResults() {

src/applications/calendar/editor/PhabricatorCalendarEventEditEngine.php

@@ -33,7 +33,7 @@ final class PhabricatorCalendarEventEditEngine
   }
 
   public function getEngineApplicationClass() {
-    return 'PhabricatorCalendarApplication';
+    return PhabricatorCalendarApplication::class;
   }
 
   protected function newEditableObject() {

src/applications/calendar/editor/PhabricatorCalendarEventEditor.php

@@ -7,7 +7,7 @@ final class PhabricatorCalendarEventEditor
   private $newIsAllDay;
 
   public function getEditorApplicationClass() {
-    return 'PhabricatorCalendarApplication';
+    return PhabricatorCalendarApplication::class;
   }
 
   public function getEditorObjectsDescription() {

src/applications/calendar/editor/PhabricatorCalendarExportEditEngine.php

@@ -22,7 +22,7 @@ final class PhabricatorCalendarExportEditEngine
   }
 
   public function getEngineApplicationClass() {
-    return 'PhabricatorCalendarApplication';
+    return PhabricatorCalendarApplication::class;
   }
 
   protected function newEditableObject() {

src/applications/calendar/editor/PhabricatorCalendarExportEditor.php

@@ -4,7 +4,7 @@ final class PhabricatorCalendarExportEditor
   extends PhabricatorApplicationTransactionEditor {
 
   public function getEditorApplicationClass() {
-    return 'PhabricatorCalendarApplication';
+    return PhabricatorCalendarApplication::class;
   }
 
   public function getEditorObjectsDescription() {

src/applications/calendar/editor/PhabricatorCalendarImportEditEngine.php

@@ -33,7 +33,7 @@ final class PhabricatorCalendarImportEditEngine
   }
 
   public function getEngineApplicationClass() {
-    return 'PhabricatorCalendarApplication';
+    return PhabricatorCalendarApplication::class;
   }
 
   protected function newEditableObject() {

src/applications/calendar/editor/PhabricatorCalendarImportEditor.php

@@ -4,7 +4,7 @@ final class PhabricatorCalendarImportEditor
   extends PhabricatorApplicationTransactionEditor {
 
   public function getEditorApplicationClass() {
-    return 'PhabricatorCalendarApplication';
+    return PhabricatorCalendarApplication::class;
   }
 
   public function getEditorObjectsDescription() {

src/applications/calendar/herald/PhabricatorCalendarEventHeraldAdapter.php

@@ -5,7 +5,7 @@ final class PhabricatorCalendarEventHeraldAdapter extends HeraldAdapter {
   private $object;
 
   public function getAdapterApplicationClass() {
-    return 'PhabricatorCalendarApplication';
+    return PhabricatorCalendarApplication::class;
   }
 
   public function getAdapterContentDescription() {

src/applications/calendar/phid/PhabricatorCalendarEventPHIDType.php

@@ -13,7 +13,7 @@ final class PhabricatorCalendarEventPHIDType extends PhabricatorPHIDType {
   }
 
   public function getPHIDTypeApplicationClass() {
-    return 'PhabricatorCalendarApplication';
+    return PhabricatorCalendarApplication::class;
   }
 
   protected function buildQueryForObjects(

src/applications/calendar/phid/PhabricatorCalendarExportPHIDType.php

@@ -13,7 +13,7 @@ final class PhabricatorCalendarExportPHIDType extends PhabricatorPHIDType {
   }
 
   public function getPHIDTypeApplicationClass() {
-    return 'PhabricatorCalendarApplication';
+    return PhabricatorCalendarApplication::class;
   }
 
   protected function buildQueryForObjects(

src/applications/calendar/phid/PhabricatorCalendarExternalInviteePHIDType.php

@@ -14,7 +14,7 @@ final class PhabricatorCalendarExternalInviteePHIDType
   }
 
   public function getPHIDTypeApplicationClass() {
-    return 'PhabricatorCalendarApplication';
+    return PhabricatorCalendarApplication::class;
   }
 
   protected function buildQueryForObjects(

src/applications/calendar/phid/PhabricatorCalendarImportPHIDType.php

@@ -13,7 +13,7 @@ final class PhabricatorCalendarImportPHIDType extends PhabricatorPHIDType {
   }
 
   public function getPHIDTypeApplicationClass() {
-    return 'PhabricatorCalendarApplication';
+    return PhabricatorCalendarApplication::class;
   }
 
   protected function buildQueryForObjects(

src/applications/calendar/query/PhabricatorCalendarEventInviteeQuery.php

@@ -93,7 +93,7 @@ final class PhabricatorCalendarEventInviteeQuery
   }
 
   public function getQueryApplicationClass() {
-    return 'PhabricatorCalendarApplication';
+    return PhabricatorCalendarApplication::class;
   }
 
 }

src/applications/calendar/query/PhabricatorCalendarEventQuery.php

@@ -513,7 +513,7 @@ final class PhabricatorCalendarEventQuery
   }
 
   public function getQueryApplicationClass() {
-    return 'PhabricatorCalendarApplication';
+    return PhabricatorCalendarApplication::class;
   }
 
   protected function willFilterPage(array $events) {

src/applications/calendar/query/PhabricatorCalendarEventSearchEngine.php

@@ -12,7 +12,7 @@ final class PhabricatorCalendarEventSearchEngine
   }
 
   public function getApplicationClassName() {
-    return 'PhabricatorCalendarApplication';
+    return PhabricatorCalendarApplication::class;
   }
 
   public function newQuery() {

src/applications/calendar/query/PhabricatorCalendarExportQuery.php

@@ -84,7 +84,7 @@ final class PhabricatorCalendarExportQuery
   }
 
   public function getQueryApplicationClass() {
-    return 'PhabricatorCalendarApplication';
+    return PhabricatorCalendarApplication::class;
   }
 
 }

src/applications/calendar/query/PhabricatorCalendarExportSearchEngine.php

@@ -8,7 +8,7 @@ final class PhabricatorCalendarExportSearchEngine
   }
 
   public function getApplicationClassName() {
-    return 'PhabricatorCalendarApplication';
+    return PhabricatorCalendarApplication::class;
   }
 
   public function canUseInPanelContext() {

src/applications/calendar/query/PhabricatorCalendarExternalInviteeQuery.php

@@ -58,7 +58,7 @@ final class PhabricatorCalendarExternalInviteeQuery
   }
 
   public function getQueryApplicationClass() {
-    return 'PhabricatorCalendarApplication';
+    return PhabricatorCalendarApplication::class;
   }
 
 }

src/applications/calendar/query/PhabricatorCalendarImportLogQuery.php

@@ -101,7 +101,7 @@ final class PhabricatorCalendarImportLogQuery
   }
 
   public function getQueryApplicationClass() {
-    return 'PhabricatorCalendarApplication';
+    return PhabricatorCalendarApplication::class;
   }
 
 }

src/applications/calendar/query/PhabricatorCalendarImportLogSearchEngine.php

@@ -8,7 +8,7 @@ final class PhabricatorCalendarImportLogSearchEngine
   }
 
   public function getApplicationClassName() {
-    return 'PhabricatorCalendarApplication';
+    return PhabricatorCalendarApplication::class;
   }
 
   public function canUseInPanelContext() {

src/applications/calendar/query/PhabricatorCalendarImportQuery.php

@@ -89,7 +89,7 @@ final class PhabricatorCalendarImportQuery
   }
 
   public function getQueryApplicationClass() {
-    return 'PhabricatorCalendarApplication';
+    return PhabricatorCalendarApplication::class;
   }
 
 }

src/applications/calendar/query/PhabricatorCalendarImportSearchEngine.php

@@ -8,7 +8,7 @@ final class PhabricatorCalendarImportSearchEngine
   }
 
   public function getApplicationClassName() {
-    return 'PhabricatorCalendarApplication';
+    return PhabricatorCalendarApplication::class;
   }
 
   public function canUseInPanelContext() {

src/applications/calendar/typeahead/PhabricatorCalendarInviteeDatasource.php

@@ -12,7 +12,7 @@ final class PhabricatorCalendarInviteeDatasource
   }
 
   public function getDatasourceApplicationClass() {
-    return 'PhabricatorCalendarApplication';
+    return PhabricatorCalendarApplication::class;
   }
 
   public function getComponentDatasources() {

src/applications/calendar/typeahead/PhabricatorCalendarInviteeUserDatasource.php

@@ -12,7 +12,7 @@ final class PhabricatorCalendarInviteeUserDatasource
   }
 
   public function getDatasourceApplicationClass() {
-    return 'PhabricatorCalendarApplication';
+    return PhabricatorCalendarApplication::class;
   }
 
   public function getComponentDatasources() {

src/applications/calendar/typeahead/PhabricatorCalendarInviteeViewerFunctionDatasource.php

@@ -12,7 +12,7 @@ final class PhabricatorCalendarInviteeViewerFunctionDatasource
   }
 
   public function getDatasourceApplicationClass() {
-    return 'PhabricatorPeopleApplication';
+    return PhabricatorPeopleApplication::class;
   }
 
   public function getDatasourceFunctions() {

src/applications/conduit/query/PhabricatorConduitLogQuery.php

@@ -107,7 +107,7 @@ final class PhabricatorConduitLogQuery
   }
 
   public function getQueryApplicationClass() {
-    return 'PhabricatorConduitApplication';
+    return PhabricatorConduitApplication::class;
   }
 
 }

src/applications/conduit/query/PhabricatorConduitLogSearchEngine.php

@@ -8,7 +8,7 @@ final class PhabricatorConduitLogSearchEngine
   }
 
   public function getApplicationClassName() {
-    return 'PhabricatorConduitApplication';
+    return PhabricatorConduitApplication::class;
   }
 
   public function canUseInPanelContext() {

src/applications/conduit/query/PhabricatorConduitMethodQuery.php

@@ -152,7 +152,7 @@ final class PhabricatorConduitMethodQuery
   }
 
   public function getQueryApplicationClass() {
-    return 'PhabricatorConduitApplication';
+    return PhabricatorConduitApplication::class;
   }
 
 }

src/applications/conduit/query/PhabricatorConduitSearchEngine.php

@@ -8,7 +8,7 @@ final class PhabricatorConduitSearchEngine
   }
 
   public function getApplicationClassName() {
-    return 'PhabricatorConduitApplication';
+    return PhabricatorConduitApplication::class;
   }
 
   public function canUseInPanelContext() {