diff --git a/scripts/almanac/manage_almanac.php b/scripts/almanac/manage_almanac.php
index 761891e142..515faa2426 100755
--- a/scripts/almanac/manage_almanac.php
+++ b/scripts/almanac/manage_almanac.php
@@ -15,7 +15,7 @@ EOSYNOPSIS
 $args->parseStandardArguments();
 
 $workflows = id(new PhutilClassMapQuery())
-  ->setAncestorClass('AlmanacManagementWorkflow')
+  ->setAncestorClass(AlmanacManagementWorkflow::class)
   ->execute();
 $workflows[] = new PhutilHelpArgumentWorkflow();
 $args->parseWorkflows($workflows);
diff --git a/scripts/cache/manage_cache.php b/scripts/cache/manage_cache.php
index ea5acdd946..3086c4f7ff 100755
--- a/scripts/cache/manage_cache.php
+++ b/scripts/cache/manage_cache.php
@@ -15,7 +15,7 @@ EOSYNOPSIS
 $args->parseStandardArguments();
 
 $workflows = id(new PhutilClassMapQuery())
-  ->setAncestorClass('PhabricatorCacheManagementWorkflow')
+  ->setAncestorClass(PhabricatorCacheManagementWorkflow::class)
   ->execute();
 $workflows[] = new PhutilHelpArgumentWorkflow();
 $args->parseWorkflows($workflows);
diff --git a/scripts/daemon/manage_daemons.php b/scripts/daemon/manage_daemons.php
index 44115f195e..394df22320 100755
--- a/scripts/daemon/manage_daemons.php
+++ b/scripts/daemon/manage_daemons.php
@@ -17,7 +17,7 @@ EOSYNOPSIS
 $args->parseStandardArguments();
 
 $workflows = id(new PhutilClassMapQuery())
-  ->setAncestorClass('PhabricatorDaemonManagementWorkflow')
+  ->setAncestorClass(PhabricatorDaemonManagementWorkflow::class)
   ->execute();
 $workflows[] = new PhutilHelpArgumentWorkflow();
 $args->parseWorkflows($workflows);
diff --git a/scripts/diviner/diviner.php b/scripts/diviner/diviner.php
index fa4c19caa7..43d367f4d1 100755
--- a/scripts/diviner/diviner.php
+++ b/scripts/diviner/diviner.php
@@ -15,7 +15,7 @@ EOHELP
 $args->parseStandardArguments();
 
 $workflows = id(new PhutilClassMapQuery())
-  ->setAncestorClass('DivinerWorkflow')
+  ->setAncestorClass(DivinerWorkflow::class)
   ->execute();
 $workflows[] = new PhutilHelpArgumentWorkflow();
 $args->parseWorkflows($workflows);
diff --git a/scripts/drydock/drydock_control.php b/scripts/drydock/drydock_control.php
index f22032b286..ef09004130 100755
--- a/scripts/drydock/drydock_control.php
+++ b/scripts/drydock/drydock_control.php
@@ -15,7 +15,7 @@ EOSYNOPSIS
 $args->parseStandardArguments();
 
 $workflows = id(new PhutilClassMapQuery())
-  ->setAncestorClass('DrydockManagementWorkflow')
+  ->setAncestorClass(DrydockManagementWorkflow::class)
   ->execute();
 $workflows[] = new PhutilHelpArgumentWorkflow();
 $args->parseWorkflows($workflows);
diff --git a/scripts/fact/manage_facts.php b/scripts/fact/manage_facts.php
index 54343d31de..bb42c9662b 100755
--- a/scripts/fact/manage_facts.php
+++ b/scripts/fact/manage_facts.php
@@ -16,7 +16,7 @@ EOSYNOPSIS
 $args->parseStandardArguments();
 
 $workflows = id(new PhutilClassMapQuery())
-  ->setAncestorClass('PhabricatorFactManagementWorkflow')
+  ->setAncestorClass(PhabricatorFactManagementWorkflow::class)
   ->execute();
 $workflows[] = new PhutilHelpArgumentWorkflow();
 $args->parseWorkflows($workflows);
diff --git a/scripts/files/manage_files.php b/scripts/files/manage_files.php
index 6886da7372..347c1d66b3 100755
--- a/scripts/files/manage_files.php
+++ b/scripts/files/manage_files.php
@@ -15,7 +15,7 @@ EOSYNOPSIS
 $args->parseStandardArguments();
 
 $workflows = id(new PhutilClassMapQuery())
-  ->setAncestorClass('PhabricatorFilesManagementWorkflow')
+  ->setAncestorClass(PhabricatorFilesManagementWorkflow::class)
   ->execute();
 $workflows[] = new PhutilHelpArgumentWorkflow();
 $args->parseWorkflows($workflows);
diff --git a/scripts/lipsum/manage_lipsum.php b/scripts/lipsum/manage_lipsum.php
index 9d45b573d4..afe65f94e5 100755
--- a/scripts/lipsum/manage_lipsum.php
+++ b/scripts/lipsum/manage_lipsum.php
@@ -15,7 +15,7 @@ EOSYNOPSIS
 $args->parseStandardArguments();
 
 $workflows = id(new PhutilClassMapQuery())
-  ->setAncestorClass('PhabricatorLipsumManagementWorkflow')
+  ->setAncestorClass(PhabricatorLipsumManagementWorkflow::class)
   ->execute();
 $workflows[] = new PhutilHelpArgumentWorkflow();
 $args->parseWorkflows($workflows);
diff --git a/scripts/mail/manage_mail.php b/scripts/mail/manage_mail.php
index a153010371..7dd1c23c3d 100755
--- a/scripts/mail/manage_mail.php
+++ b/scripts/mail/manage_mail.php
@@ -15,7 +15,7 @@ EOSYNOPSIS
 $args->parseStandardArguments();
 
 $workflows = id(new PhutilClassMapQuery())
-  ->setAncestorClass('PhabricatorMailManagementWorkflow')
+  ->setAncestorClass(PhabricatorMailManagementWorkflow::class)
   ->execute();
 $workflows[] = new PhutilHelpArgumentWorkflow();
 $args->parseWorkflows($workflows);
diff --git a/scripts/repository/manage_repositories.php b/scripts/repository/manage_repositories.php
index d484a47e59..b67996c4d6 100755
--- a/scripts/repository/manage_repositories.php
+++ b/scripts/repository/manage_repositories.php
@@ -16,7 +16,7 @@ EOSYNOPSIS
 $args->parseStandardArguments();
 
 $workflows = id(new PhutilClassMapQuery())
-  ->setAncestorClass('PhabricatorRepositoryManagementWorkflow')
+  ->setAncestorClass(PhabricatorRepositoryManagementWorkflow::class)
   ->execute();
 $workflows[] = new PhutilHelpArgumentWorkflow();
 $args->parseWorkflows($workflows);
diff --git a/scripts/search/manage_search.php b/scripts/search/manage_search.php
index 6bb300492a..8d4c769ac1 100755
--- a/scripts/search/manage_search.php
+++ b/scripts/search/manage_search.php
@@ -15,7 +15,7 @@ EOSYNOPSIS
 $args->parseStandardArguments();
 
 $workflows = id(new PhutilClassMapQuery())
-  ->setAncestorClass('PhabricatorSearchManagementWorkflow')
+  ->setAncestorClass(PhabricatorSearchManagementWorkflow::class)
   ->execute();
 $workflows[] = new PhutilHelpArgumentWorkflow();
 $args->parseWorkflows($workflows);
diff --git a/scripts/setup/manage_audit.php b/scripts/setup/manage_audit.php
index 84e9defab7..afa5f32510 100755
--- a/scripts/setup/manage_audit.php
+++ b/scripts/setup/manage_audit.php
@@ -15,7 +15,7 @@ EOSYNOPSIS
 $args->parseStandardArguments();
 
 $workflows = id(new PhutilClassMapQuery())
-  ->setAncestorClass('PhabricatorAuditManagementWorkflow')
+  ->setAncestorClass(PhabricatorAuditManagementWorkflow::class)
   ->execute();
 $workflows[] = new PhutilHelpArgumentWorkflow();
 $args->parseWorkflows($workflows);
diff --git a/scripts/setup/manage_auth.php b/scripts/setup/manage_auth.php
index 06a406db5d..951ccf23b1 100755
--- a/scripts/setup/manage_auth.php
+++ b/scripts/setup/manage_auth.php
@@ -15,7 +15,7 @@ EOSYNOPSIS
 $args->parseStandardArguments();
 
 $workflows = id(new PhutilClassMapQuery())
-  ->setAncestorClass('PhabricatorAuthManagementWorkflow')
+  ->setAncestorClass(PhabricatorAuthManagementWorkflow::class)
   ->execute();
 $workflows[] = new PhutilHelpArgumentWorkflow();
 $args->parseWorkflows($workflows);
diff --git a/scripts/setup/manage_bulk.php b/scripts/setup/manage_bulk.php
index 9786f9b078..d863b8a9d8 100755
--- a/scripts/setup/manage_bulk.php
+++ b/scripts/setup/manage_bulk.php
@@ -15,7 +15,7 @@ EOSYNOPSIS
 $args->parseStandardArguments();
 
 $workflows = id(new PhutilClassMapQuery())
-  ->setAncestorClass('PhabricatorBulkManagementWorkflow')
+  ->setAncestorClass(PhabricatorBulkManagementWorkflow::class)
   ->execute();
 $workflows[] = new PhutilHelpArgumentWorkflow();
 $args->parseWorkflows($workflows);
diff --git a/scripts/setup/manage_calendar.php b/scripts/setup/manage_calendar.php
index 135c42ded1..2f0e769d00 100755
--- a/scripts/setup/manage_calendar.php
+++ b/scripts/setup/manage_calendar.php
@@ -15,7 +15,7 @@ EOSYNOPSIS
 $args->parseStandardArguments();
 
 $workflows = id(new PhutilClassMapQuery())
-  ->setAncestorClass('PhabricatorCalendarManagementWorkflow')
+  ->setAncestorClass(PhabricatorCalendarManagementWorkflow::class)
   ->execute();
 $workflows[] = new PhutilHelpArgumentWorkflow();
 $args->parseWorkflows($workflows);
diff --git a/scripts/setup/manage_celerity.php b/scripts/setup/manage_celerity.php
index 2ae67743b2..ebadcf109f 100755
--- a/scripts/setup/manage_celerity.php
+++ b/scripts/setup/manage_celerity.php
@@ -15,7 +15,7 @@ EOSYNOPSIS
 $args->parseStandardArguments();
 
 $workflows = id(new PhutilClassMapQuery())
-  ->setAncestorClass('CelerityManagementWorkflow')
+  ->setAncestorClass(CelerityManagementWorkflow::class)
   ->execute();
 $workflows[] = new PhutilHelpArgumentWorkflow();
 $args->parseWorkflows($workflows);
diff --git a/scripts/setup/manage_conduit.php b/scripts/setup/manage_conduit.php
index 07384e7ed8..9003490fb4 100755
--- a/scripts/setup/manage_conduit.php
+++ b/scripts/setup/manage_conduit.php
@@ -15,7 +15,7 @@ EOSYNOPSIS
 $args->parseStandardArguments();
 
 $workflows = id(new PhutilClassMapQuery())
-  ->setAncestorClass('PhabricatorConduitManagementWorkflow')
+  ->setAncestorClass(PhabricatorConduitManagementWorkflow::class)
   ->execute();
 $workflows[] = new PhutilHelpArgumentWorkflow();
 $args->parseWorkflows($workflows);
diff --git a/scripts/setup/manage_config.php b/scripts/setup/manage_config.php
index 2574be2454..1891cda864 100755
--- a/scripts/setup/manage_config.php
+++ b/scripts/setup/manage_config.php
@@ -15,7 +15,7 @@ EOSYNOPSIS
 $args->parseStandardArguments();
 
 $workflows = id(new PhutilClassMapQuery())
-  ->setAncestorClass('PhabricatorConfigManagementWorkflow')
+  ->setAncestorClass(PhabricatorConfigManagementWorkflow::class)
   ->execute();
 $workflows[] = new PhutilHelpArgumentWorkflow();
 $args->parseWorkflows($workflows);
diff --git a/scripts/setup/manage_differential.php b/scripts/setup/manage_differential.php
index 30e11d27a9..415a3daf2e 100755
--- a/scripts/setup/manage_differential.php
+++ b/scripts/setup/manage_differential.php
@@ -15,7 +15,7 @@ EOSYNOPSIS
 $args->parseStandardArguments();
 
 $workflows = id(new PhutilClassMapQuery())
-  ->setAncestorClass('PhabricatorDifferentialManagementWorkflow')
+  ->setAncestorClass(PhabricatorDifferentialManagementWorkflow::class)
   ->execute();
 $workflows[] = new PhutilHelpArgumentWorkflow();
 $args->parseWorkflows($workflows);
diff --git a/scripts/setup/manage_feed.php b/scripts/setup/manage_feed.php
index 02516aa9a5..7fd89b730b 100755
--- a/scripts/setup/manage_feed.php
+++ b/scripts/setup/manage_feed.php
@@ -15,7 +15,7 @@ EOSYNOPSIS
 $args->parseStandardArguments();
 
 $workflows = id(new PhutilClassMapQuery())
-  ->setAncestorClass('PhabricatorFeedManagementWorkflow')
+  ->setAncestorClass(PhabricatorFeedManagementWorkflow::class)
   ->execute();
 $workflows[] = new PhutilHelpArgumentWorkflow();
 $args->parseWorkflows($workflows);
diff --git a/scripts/setup/manage_garbage.php b/scripts/setup/manage_garbage.php
index 326730375e..3b01c2ec4e 100755
--- a/scripts/setup/manage_garbage.php
+++ b/scripts/setup/manage_garbage.php
@@ -15,7 +15,7 @@ EOSYNOPSIS
 $args->parseStandardArguments();
 
 $workflows = id(new PhutilClassMapQuery())
-  ->setAncestorClass('PhabricatorGarbageCollectorManagementWorkflow')
+  ->setAncestorClass(PhabricatorGarbageCollectorManagementWorkflow::class)
   ->execute();
 $workflows[] = new PhutilHelpArgumentWorkflow();
 $args->parseWorkflows($workflows);
diff --git a/scripts/setup/manage_harbormaster.php b/scripts/setup/manage_harbormaster.php
index 484c671aa9..101c6c97e5 100755
--- a/scripts/setup/manage_harbormaster.php
+++ b/scripts/setup/manage_harbormaster.php
@@ -15,7 +15,7 @@ EOSYNOPSIS
 $args->parseStandardArguments();
 
 $workflows = id(new PhutilClassMapQuery())
-  ->setAncestorClass('HarbormasterManagementWorkflow')
+  ->setAncestorClass(HarbormasterManagementWorkflow::class)
   ->execute();
 $workflows[] = new PhutilHelpArgumentWorkflow();
 $args->parseWorkflows($workflows);
diff --git a/scripts/setup/manage_herald.php b/scripts/setup/manage_herald.php
index 4ebd94f820..a615cd5018 100755
--- a/scripts/setup/manage_herald.php
+++ b/scripts/setup/manage_herald.php
@@ -15,7 +15,7 @@ EOSYNOPSIS
 $args->parseStandardArguments();
 
 $workflows = id(new PhutilClassMapQuery())
-  ->setAncestorClass('HeraldManagementWorkflow')
+  ->setAncestorClass(HeraldManagementWorkflow::class)
   ->execute();
 $workflows[] = new PhutilHelpArgumentWorkflow();
 $args->parseWorkflows($workflows);
diff --git a/scripts/setup/manage_i18n.php b/scripts/setup/manage_i18n.php
index 5f01b6331c..631b2a7f25 100755
--- a/scripts/setup/manage_i18n.php
+++ b/scripts/setup/manage_i18n.php
@@ -15,7 +15,7 @@ EOSYNOPSIS
 $args->parseStandardArguments();
 
 $workflows = id(new PhutilClassMapQuery())
-  ->setAncestorClass('PhabricatorInternationalizationManagementWorkflow')
+  ->setAncestorClass(PhabricatorInternationalizationManagementWorkflow::class)
   ->execute();
 $workflows[] = new PhutilHelpArgumentWorkflow();
 $args->parseWorkflows($workflows);
diff --git a/scripts/setup/manage_lock.php b/scripts/setup/manage_lock.php
index ec5405ec01..6d0214491a 100755
--- a/scripts/setup/manage_lock.php
+++ b/scripts/setup/manage_lock.php
@@ -15,7 +15,7 @@ EOSYNOPSIS
 $args->parseStandardArguments();
 
 $workflows = id(new PhutilClassMapQuery())
-  ->setAncestorClass('PhabricatorLockManagementWorkflow')
+  ->setAncestorClass(PhabricatorLockManagementWorkflow::class)
   ->execute();
 $workflows[] = new PhutilHelpArgumentWorkflow();
 $args->parseWorkflows($workflows);
diff --git a/scripts/setup/manage_nuance.php b/scripts/setup/manage_nuance.php
index ebf312305a..872cadafbe 100755
--- a/scripts/setup/manage_nuance.php
+++ b/scripts/setup/manage_nuance.php
@@ -15,7 +15,7 @@ EOSYNOPSIS
 $args->parseStandardArguments();
 
 $workflows = id(new PhutilClassMapQuery())
-  ->setAncestorClass('NuanceManagementWorkflow')
+  ->setAncestorClass(NuanceManagementWorkflow::class)
   ->execute();
 $workflows[] = new PhutilHelpArgumentWorkflow();
 $args->parseWorkflows($workflows);
diff --git a/scripts/setup/manage_phortune.php b/scripts/setup/manage_phortune.php
index a04ed0ccd6..4779cc0950 100755
--- a/scripts/setup/manage_phortune.php
+++ b/scripts/setup/manage_phortune.php
@@ -15,7 +15,7 @@ EOSYNOPSIS
 $args->parseStandardArguments();
 
 $workflows = id(new PhutilClassMapQuery())
-  ->setAncestorClass('PhabricatorPhortuneManagementWorkflow')
+  ->setAncestorClass(PhabricatorPhortuneManagementWorkflow::class)
   ->execute();
 $workflows[] = new PhutilHelpArgumentWorkflow();
 $args->parseWorkflows($workflows);
diff --git a/scripts/setup/manage_policy.php b/scripts/setup/manage_policy.php
index 3e36592abc..cb16705872 100755
--- a/scripts/setup/manage_policy.php
+++ b/scripts/setup/manage_policy.php
@@ -15,7 +15,7 @@ EOSYNOPSIS
 $args->parseStandardArguments();
 
 $workflows = id(new PhutilClassMapQuery())
-  ->setAncestorClass('PhabricatorPolicyManagementWorkflow')
+  ->setAncestorClass(PhabricatorPolicyManagementWorkflow::class)
   ->execute();
 $workflows[] = new PhutilHelpArgumentWorkflow();
 $args->parseWorkflows($workflows);
diff --git a/scripts/setup/manage_remove.php b/scripts/setup/manage_remove.php
index 9a49e8774d..e8804b7b3f 100755
--- a/scripts/setup/manage_remove.php
+++ b/scripts/setup/manage_remove.php
@@ -15,7 +15,7 @@ EOSYNOPSIS
 $args->parseStandardArguments();
 
 $workflows = id(new PhutilClassMapQuery())
-  ->setAncestorClass('PhabricatorSystemRemoveWorkflow')
+  ->setAncestorClass(PhabricatorSystemRemoveWorkflow::class)
   ->execute();
 $workflows[] = new PhutilHelpArgumentWorkflow();
 $args->parseWorkflows($workflows);
diff --git a/scripts/setup/manage_trigger.php b/scripts/setup/manage_trigger.php
index 9bfcd0e692..f1e2cff501 100755
--- a/scripts/setup/manage_trigger.php
+++ b/scripts/setup/manage_trigger.php
@@ -15,7 +15,7 @@ EOSYNOPSIS
 $args->parseStandardArguments();
 
 $workflows = id(new PhutilClassMapQuery())
-  ->setAncestorClass('PhabricatorWorkerTriggerManagementWorkflow')
+  ->setAncestorClass(PhabricatorWorkerTriggerManagementWorkflow::class)
   ->execute();
 $workflows[] = new PhutilHelpArgumentWorkflow();
 $args->parseWorkflows($workflows);
diff --git a/scripts/setup/manage_user.php b/scripts/setup/manage_user.php
index f571cb9346..6ebddb8cc1 100755
--- a/scripts/setup/manage_user.php
+++ b/scripts/setup/manage_user.php
@@ -14,7 +14,7 @@ EOSYNOPSIS
 $args->parseStandardArguments();
 
 $workflows = id(new PhutilClassMapQuery())
-  ->setAncestorClass('PhabricatorPeopleManagementWorkflow')
+  ->setAncestorClass(PhabricatorPeopleManagementWorkflow::class)
   ->execute();
 $workflows[] = new PhutilHelpArgumentWorkflow();
 $args->parseWorkflows($workflows);
diff --git a/scripts/setup/manage_webhook.php b/scripts/setup/manage_webhook.php
index afe662617a..ef70005937 100755
--- a/scripts/setup/manage_webhook.php
+++ b/scripts/setup/manage_webhook.php
@@ -15,7 +15,7 @@ EOSYNOPSIS
 $args->parseStandardArguments();
 
 $workflows = id(new PhutilClassMapQuery())
-  ->setAncestorClass('HeraldWebhookManagementWorkflow')
+  ->setAncestorClass(HeraldWebhookManagementWorkflow::class)
   ->execute();
 $workflows[] = new PhutilHelpArgumentWorkflow();
 $args->parseWorkflows($workflows);
diff --git a/scripts/setup/manage_worker.php b/scripts/setup/manage_worker.php
index 588cb69972..bd1cb4b0ec 100755
--- a/scripts/setup/manage_worker.php
+++ b/scripts/setup/manage_worker.php
@@ -15,7 +15,7 @@ EOSYNOPSIS
 $args->parseStandardArguments();
 
 $workflows = id(new PhutilClassMapQuery())
-  ->setAncestorClass('PhabricatorWorkerManagementWorkflow')
+  ->setAncestorClass(PhabricatorWorkerManagementWorkflow::class)
   ->execute();
 $workflows[] = new PhutilHelpArgumentWorkflow();
 $args->parseWorkflows($workflows);
diff --git a/scripts/sql/manage_storage.php b/scripts/sql/manage_storage.php
index c3de483d72..3568eb7489 100755
--- a/scripts/sql/manage_storage.php
+++ b/scripts/sql/manage_storage.php
@@ -234,7 +234,7 @@ foreach ($refs as $ref) {
 }
 
 $workflows = id(new PhutilClassMapQuery())
-  ->setAncestorClass('PhabricatorStorageManagementWorkflow')
+  ->setAncestorClass(PhabricatorStorageManagementWorkflow::class)
   ->execute();
 
 $patches = PhabricatorSQLPatchList::buildAllPatches();
diff --git a/scripts/ssh/ssh-exec.php b/scripts/ssh/ssh-exec.php
index 7b5b6adb8f..d50cc373cd 100755
--- a/scripts/ssh/ssh-exec.php
+++ b/scripts/ssh/ssh-exec.php
@@ -220,7 +220,7 @@ try {
   }
 
   $workflows = id(new PhutilClassMapQuery())
-    ->setAncestorClass('PhabricatorSSHWorkflow')
+    ->setAncestorClass(PhabricatorSSHWorkflow::class)
     ->setUniqueMethod('getName')
     ->execute();
 
diff --git a/src/__tests__/PhabricatorConduitTestCase.php b/src/__tests__/PhabricatorConduitTestCase.php
index 3a9c6911bc..4e62ef4ae0 100644
--- a/src/__tests__/PhabricatorConduitTestCase.php
+++ b/src/__tests__/PhabricatorConduitTestCase.php
@@ -4,7 +4,7 @@ final class PhabricatorConduitTestCase extends PhabricatorTestCase {
 
   public function testConduitMethods() {
     $methods = id(new PhutilClassMapQuery())
-      ->setAncestorClass('ConduitAPIMethod')
+      ->setAncestorClass(ConduitAPIMethod::class)
       ->execute();
 
     // We're just looking for a side effect of ConduitCall construction
diff --git a/src/applications/conduit/query/PhabricatorConduitMethodQuery.php b/src/applications/conduit/query/PhabricatorConduitMethodQuery.php
index 6a66d37977..d6846ae08d 100644
--- a/src/applications/conduit/query/PhabricatorConduitMethodQuery.php
+++ b/src/applications/conduit/query/PhabricatorConduitMethodQuery.php
@@ -52,7 +52,7 @@ final class PhabricatorConduitMethodQuery
 
   private function getAllMethods() {
     return id(new PhutilClassMapQuery())
-      ->setAncestorClass('ConduitAPIMethod')
+      ->setAncestorClass(ConduitAPIMethod::class)
       ->setSortMethod('getSortOrder')
       ->execute();
   }
diff --git a/src/applications/config/schema/PhabricatorConfigCoreSchemaSpec.php b/src/applications/config/schema/PhabricatorConfigCoreSchemaSpec.php
index 0d8d743649..61c0f72187 100644
--- a/src/applications/config/schema/PhabricatorConfigCoreSchemaSpec.php
+++ b/src/applications/config/schema/PhabricatorConfigCoreSchemaSpec.php
@@ -10,7 +10,7 @@ final class PhabricatorConfigCoreSchemaSpec
     // Build all Lisk table schemata.
 
     $lisk_objects = id(new PhutilClassMapQuery())
-      ->setAncestorClass('PhabricatorLiskDAO')
+      ->setAncestorClass(PhabricatorLiskDAO::class)
       ->execute();
 
     $counters = array();
@@ -43,7 +43,7 @@ final class PhabricatorConfigCoreSchemaSpec
     }
 
     $ferret_objects = id(new PhutilClassMapQuery())
-      ->setAncestorClass('PhabricatorFerretInterface')
+      ->setAncestorClass(PhabricatorFerretInterface::class)
       ->execute();
 
     foreach ($ferret_objects as $ferret_object) {
diff --git a/src/applications/config/schema/PhabricatorConfigSchemaQuery.php b/src/applications/config/schema/PhabricatorConfigSchemaQuery.php
index 6143b23792..f439891464 100644
--- a/src/applications/config/schema/PhabricatorConfigSchemaQuery.php
+++ b/src/applications/config/schema/PhabricatorConfigSchemaQuery.php
@@ -230,7 +230,7 @@ final class PhabricatorConfigSchemaQuery extends Phobject {
     $info = $this->getAPI($ref)->getCharsetInfo();
 
     $specs = id(new PhutilClassMapQuery())
-      ->setAncestorClass('PhabricatorConfigSchemaSpec')
+      ->setAncestorClass(PhabricatorConfigSchemaSpec::class)
       ->execute();
 
     $server_schema = id(new PhabricatorConfigServerSchema())
diff --git a/src/applications/console/core/DarkConsoleCore.php b/src/applications/console/core/DarkConsoleCore.php
index 73065b900e..900c0057b5 100644
--- a/src/applications/console/core/DarkConsoleCore.php
+++ b/src/applications/console/core/DarkConsoleCore.php
@@ -7,7 +7,7 @@ final class DarkConsoleCore extends Phobject {
 
   public function __construct() {
     $this->plugins = id(new PhutilClassMapQuery())
-      ->setAncestorClass('DarkConsolePlugin')
+      ->setAncestorClass(DarkConsolePlugin::class)
       ->execute();
 
     foreach ($this->plugins as $plugin) {
diff --git a/src/applications/daemon/management/PhabricatorDaemonManagementWorkflow.php b/src/applications/daemon/management/PhabricatorDaemonManagementWorkflow.php
index 99ee79ff80..c52d7f9c3b 100644
--- a/src/applications/daemon/management/PhabricatorDaemonManagementWorkflow.php
+++ b/src/applications/daemon/management/PhabricatorDaemonManagementWorkflow.php
@@ -7,7 +7,7 @@ abstract class PhabricatorDaemonManagementWorkflow
 
   final protected function loadAvailableDaemonClasses() {
     return id(new PhutilSymbolLoader())
-      ->setAncestorClass('PhutilDaemon')
+      ->setAncestorClass(PhutilDaemon::class)
       ->setConcreteOnly(true)
       ->selectSymbolsWithoutLoading();
   }
diff --git a/src/applications/dashboard/editfield/PhabricatorDashboardQueryPanelApplicationEditField.php b/src/applications/dashboard/editfield/PhabricatorDashboardQueryPanelApplicationEditField.php
index 7e9814f83d..9ddfc9e970 100644
--- a/src/applications/dashboard/editfield/PhabricatorDashboardQueryPanelApplicationEditField.php
+++ b/src/applications/dashboard/editfield/PhabricatorDashboardQueryPanelApplicationEditField.php
@@ -7,7 +7,7 @@ final class PhabricatorDashboardQueryPanelApplicationEditField
 
   protected function newControl() {
     $engines = id(new PhutilClassMapQuery())
-      ->setAncestorClass('PhabricatorApplicationSearchEngine')
+      ->setAncestorClass(PhabricatorApplicationSearchEngine::class)
       ->setFilterMethod('canUseInPanelContext')
       ->execute();
 
diff --git a/src/applications/dashboard/editfield/PhabricatorDashboardQueryPanelQueryEditField.php b/src/applications/dashboard/editfield/PhabricatorDashboardQueryPanelQueryEditField.php
index 3be70dc952..cd41df2844 100644
--- a/src/applications/dashboard/editfield/PhabricatorDashboardQueryPanelQueryEditField.php
+++ b/src/applications/dashboard/editfield/PhabricatorDashboardQueryPanelQueryEditField.php
@@ -16,7 +16,7 @@ final class PhabricatorDashboardQueryPanelQueryEditField
 
   protected function newControl() {
     $engines = id(new PhutilClassMapQuery())
-      ->setAncestorClass('PhabricatorApplicationSearchEngine')
+      ->setAncestorClass(PhabricatorApplicationSearchEngine::class)
       ->setFilterMethod('canUseInPanelContext')
       ->execute();
 
diff --git a/src/applications/diffusion/controller/DiffusionSymbolController.php b/src/applications/diffusion/controller/DiffusionSymbolController.php
index c4ce99fa87..2e1c3a1081 100644
--- a/src/applications/diffusion/controller/DiffusionSymbolController.php
+++ b/src/applications/diffusion/controller/DiffusionSymbolController.php
@@ -84,7 +84,7 @@ final class DiffusionSymbolController extends DiffusionController {
     }
 
     $external_sources = id(new PhutilClassMapQuery())
-      ->setAncestorClass('DiffusionExternalSymbolsSource')
+      ->setAncestorClass(DiffusionExternalSymbolsSource::class)
       ->execute();
 
     $results = array($symbols);
diff --git a/src/applications/diviner/workflow/DivinerAtomizeWorkflow.php b/src/applications/diviner/workflow/DivinerAtomizeWorkflow.php
index 7a1d5edfaf..3cbdff42c4 100644
--- a/src/applications/diviner/workflow/DivinerAtomizeWorkflow.php
+++ b/src/applications/diviner/workflow/DivinerAtomizeWorkflow.php
@@ -45,7 +45,7 @@ final class DivinerAtomizeWorkflow extends DivinerWorkflow {
     $symbols = id(new PhutilSymbolLoader())
       ->setName($atomizer_class)
       ->setConcreteOnly(true)
-      ->setAncestorClass('DivinerAtomizer')
+      ->setAncestorClass(DivinerAtomizer::class)
       ->selectAndLoadSymbols();
     if (!$symbols) {
       throw new PhutilArgumentUsageException(
diff --git a/src/applications/diviner/workflow/DivinerGenerateWorkflow.php b/src/applications/diviner/workflow/DivinerGenerateWorkflow.php
index 0cde772fc3..6202a1d959 100644
--- a/src/applications/diviner/workflow/DivinerGenerateWorkflow.php
+++ b/src/applications/diviner/workflow/DivinerGenerateWorkflow.php
@@ -180,7 +180,7 @@ final class DivinerGenerateWorkflow extends DivinerWorkflow {
     $symbols = id(new PhutilSymbolLoader())
       ->setName($publisher_class)
       ->setConcreteOnly(true)
-      ->setAncestorClass('DivinerPublisher')
+      ->setAncestorClass(DivinerPublisher::class)
       ->selectAndLoadSymbols();
 
     if (!$symbols) {
@@ -414,7 +414,7 @@ final class DivinerGenerateWorkflow extends DivinerWorkflow {
     $version['rules'] = $this->getRules();
 
     $atomizers = id(new PhutilClassMapQuery())
-      ->setAncestorClass('DivinerAtomizer')
+      ->setAncestorClass(DivinerAtomizer::class)
       ->execute();
 
     $atomizer_versions = array();
diff --git a/src/applications/doorkeeper/engine/DoorkeeperImportEngine.php b/src/applications/doorkeeper/engine/DoorkeeperImportEngine.php
index 02642cb994..cab49b30b2 100644
--- a/src/applications/doorkeeper/engine/DoorkeeperImportEngine.php
+++ b/src/applications/doorkeeper/engine/DoorkeeperImportEngine.php
@@ -104,7 +104,7 @@ final class DoorkeeperImportEngine extends Phobject {
 
     if (!$this->localOnly) {
       $bridges = id(new PhutilClassMapQuery())
-        ->setAncestorClass('DoorkeeperBridge')
+        ->setAncestorClass(DoorkeeperBridge::class)
         ->setFilterMethod('isEnabled')
         ->execute();
 
diff --git a/src/applications/doorkeeper/option/PhabricatorAsanaConfigOptions.php b/src/applications/doorkeeper/option/PhabricatorAsanaConfigOptions.php
index 64f2f17dd3..f0976a2aea 100644
--- a/src/applications/doorkeeper/option/PhabricatorAsanaConfigOptions.php
+++ b/src/applications/doorkeeper/option/PhabricatorAsanaConfigOptions.php
@@ -128,7 +128,7 @@ final class PhabricatorAsanaConfigOptions
     $viewer = $request->getUser();
 
     $publishers = id(new PhutilClassMapQuery())
-      ->setAncestorClass('DoorkeeperFeedStoryPublisher')
+      ->setAncestorClass(DoorkeeperFeedStoryPublisher::class)
       ->execute();
 
     $out = array();
diff --git a/src/applications/doorkeeper/worker/DoorkeeperFeedWorker.php b/src/applications/doorkeeper/worker/DoorkeeperFeedWorker.php
index 8bbcc0f4fa..1b268182fb 100644
--- a/src/applications/doorkeeper/worker/DoorkeeperFeedWorker.php
+++ b/src/applications/doorkeeper/worker/DoorkeeperFeedWorker.php
@@ -126,7 +126,7 @@ abstract class DoorkeeperFeedWorker extends FeedPushWorker {
     $object = $this->getStoryObject();
 
     $publishers = id(new PhutilClassMapQuery())
-      ->setAncestorClass('DoorkeeperFeedStoryPublisher')
+      ->setAncestorClass(DoorkeeperFeedStoryPublisher::class)
       ->execute();
 
     foreach ($publishers as $publisher) {
diff --git a/src/applications/feed/query/PhabricatorFeedTransactionQuery.php b/src/applications/feed/query/PhabricatorFeedTransactionQuery.php
index 1d15278978..332fd28111 100644
--- a/src/applications/feed/query/PhabricatorFeedTransactionQuery.php
+++ b/src/applications/feed/query/PhabricatorFeedTransactionQuery.php
@@ -152,7 +152,7 @@ final class PhabricatorFeedTransactionQuery
     $viewer = $this->getViewer();
 
     $queries = id(new PhutilClassMapQuery())
-      ->setAncestorClass('PhabricatorApplicationTransactionQuery')
+      ->setAncestorClass(PhabricatorApplicationTransactionQuery::class)
       ->execute();
 
     // Remove TransactionQuery classes of uninstalled apps. Increases query
diff --git a/src/applications/feed/worker/FeedPublisherWorker.php b/src/applications/feed/worker/FeedPublisherWorker.php
index c2aeed0f3d..a3eb66ae16 100644
--- a/src/applications/feed/worker/FeedPublisherWorker.php
+++ b/src/applications/feed/worker/FeedPublisherWorker.php
@@ -25,7 +25,7 @@ final class FeedPublisherWorker extends FeedPushWorker {
     // Find and schedule all the enabled Doorkeeper publishers.
     // TODO: Use PhutilClassMapQuery?
     $doorkeeper_workers = id(new PhutilSymbolLoader())
-      ->setAncestorClass('DoorkeeperFeedWorker')
+      ->setAncestorClass(DoorkeeperFeedWorker::class)
       ->loadObjects($argv);
     foreach ($doorkeeper_workers as $worker) {
       if (!$worker->isEnabled()) {
diff --git a/src/applications/files/storage/PhabricatorFile.php b/src/applications/files/storage/PhabricatorFile.php
index 13b257aff1..46cdfee1c9 100644
--- a/src/applications/files/storage/PhabricatorFile.php
+++ b/src/applications/files/storage/PhabricatorFile.php
@@ -1100,7 +1100,7 @@ final class PhabricatorFile extends PhabricatorFileDAO
 
   public static function buildAllEngines() {
     return id(new PhutilClassMapQuery())
-      ->setAncestorClass('PhabricatorFileStorageEngine')
+      ->setAncestorClass(PhabricatorFileStorageEngine::class)
       ->execute();
   }
 
diff --git a/src/applications/flag/query/PhabricatorFlagSearchEngine.php b/src/applications/flag/query/PhabricatorFlagSearchEngine.php
index bc571b6bf4..4f524d470b 100644
--- a/src/applications/flag/query/PhabricatorFlagSearchEngine.php
+++ b/src/applications/flag/query/PhabricatorFlagSearchEngine.php
@@ -101,7 +101,7 @@ final class PhabricatorFlagSearchEngine
 
   private function getObjectFilterOptions() {
     $objects = id(new PhutilClassMapQuery())
-      ->setAncestorClass('PhabricatorFlaggableInterface')
+      ->setAncestorClass(PhabricatorFlaggableInterface::class)
       ->execute();
 
     $all_types = PhabricatorPHIDType::getAllTypes();
diff --git a/src/applications/harbormaster/storage/build/HarbormasterBuild.php b/src/applications/harbormaster/storage/build/HarbormasterBuild.php
index 0d9274a3c8..0b509cd305 100644
--- a/src/applications/harbormaster/storage/build/HarbormasterBuild.php
+++ b/src/applications/harbormaster/storage/build/HarbormasterBuild.php
@@ -160,7 +160,7 @@ final class HarbormasterBuild extends HarbormasterDAO
 
   public static function getAvailableBuildVariables() {
     $objects = id(new PhutilClassMapQuery())
-      ->setAncestorClass('HarbormasterBuildableInterface')
+      ->setAncestorClass(HarbormasterBuildableInterface::class)
       ->execute();
 
     $variables = array();
diff --git a/src/applications/lipsum/management/PhabricatorLipsumGenerateWorkflow.php b/src/applications/lipsum/management/PhabricatorLipsumGenerateWorkflow.php
index 24301640ed..0444b33217 100644
--- a/src/applications/lipsum/management/PhabricatorLipsumGenerateWorkflow.php
+++ b/src/applications/lipsum/management/PhabricatorLipsumGenerateWorkflow.php
@@ -40,7 +40,7 @@ final class PhabricatorLipsumGenerateWorkflow
     }
 
     $all_generators = id(new PhutilClassMapQuery())
-      ->setAncestorClass('PhabricatorTestDataGenerator')
+      ->setAncestorClass(PhabricatorTestDataGenerator::class)
       ->setUniqueMethod('getGeneratorKey')
       ->execute();
 
diff --git a/src/applications/metamta/management/PhabricatorMailManagementReceiveTestWorkflow.php b/src/applications/metamta/management/PhabricatorMailManagementReceiveTestWorkflow.php
index a3c556e6ac..4e9e378f9b 100644
--- a/src/applications/metamta/management/PhabricatorMailManagementReceiveTestWorkflow.php
+++ b/src/applications/metamta/management/PhabricatorMailManagementReceiveTestWorkflow.php
@@ -125,7 +125,7 @@ final class PhabricatorMailManagementReceiveTestWorkflow
           ));
 
       $receivers = id(new PhutilClassMapQuery())
-        ->setAncestorClass('PhabricatorMailReceiver')
+        ->setAncestorClass(PhabricatorMailReceiver::class)
         ->setFilterMethod('isEnabled')
         ->execute();
 
diff --git a/src/applications/metamta/storage/PhabricatorMetaMTAReceivedMail.php b/src/applications/metamta/storage/PhabricatorMetaMTAReceivedMail.php
index 9f0d34de9e..78cc77d02e 100644
--- a/src/applications/metamta/storage/PhabricatorMetaMTAReceivedMail.php
+++ b/src/applications/metamta/storage/PhabricatorMetaMTAReceivedMail.php
@@ -176,7 +176,7 @@ final class PhabricatorMetaMTAReceivedMail extends PhabricatorMetaMTADAO {
       }
 
       $receivers = id(new PhutilClassMapQuery())
-        ->setAncestorClass('PhabricatorMailReceiver')
+        ->setAncestorClass(PhabricatorMailReceiver::class)
         ->setFilterMethod('isEnabled')
         ->execute();
 
diff --git a/src/applications/policy/__tests__/PhabricatorPolicyTestCase.php b/src/applications/policy/__tests__/PhabricatorPolicyTestCase.php
index 2cea894cfc..46c6c5c233 100644
--- a/src/applications/policy/__tests__/PhabricatorPolicyTestCase.php
+++ b/src/applications/policy/__tests__/PhabricatorPolicyTestCase.php
@@ -378,7 +378,7 @@ final class PhabricatorPolicyTestCase extends PhabricatorTestCase {
 
   public function testAllQueriesBelongToActualApplications() {
     $queries = id(new PhutilClassMapQuery())
-      ->setAncestorClass('PhabricatorPolicyAwareQuery')
+      ->setAncestorClass(PhabricatorPolicyAwareQuery::class)
       ->execute();
 
     foreach ($queries as $qclass => $query) {
diff --git a/src/applications/policy/config/PolicyLockOptionType.php b/src/applications/policy/config/PolicyLockOptionType.php
index 9dd147bbe4..37b21d9bc7 100644
--- a/src/applications/policy/config/PolicyLockOptionType.php
+++ b/src/applications/policy/config/PolicyLockOptionType.php
@@ -5,7 +5,7 @@ final class PolicyLockOptionType
 
   public function validateOption(PhabricatorConfigOption $option, $value) {
     $capabilities = id(new PhutilClassMapQuery())
-      ->setAncestorClass('PhabricatorPolicyCapability')
+      ->setAncestorClass(PhabricatorPolicyCapability::class)
       ->setUniqueMethod('getCapabilityKey')
       ->execute();
 
diff --git a/src/applications/policy/controller/PhabricatorPolicyEditController.php b/src/applications/policy/controller/PhabricatorPolicyEditController.php
index c0a003a0c0..b5ec636ee9 100644
--- a/src/applications/policy/controller/PhabricatorPolicyEditController.php
+++ b/src/applications/policy/controller/PhabricatorPolicyEditController.php
@@ -48,7 +48,7 @@ final class PhabricatorPolicyEditController
     );
 
     $rules = id(new PhutilClassMapQuery())
-      ->setAncestorClass('PhabricatorPolicyRule')
+      ->setAncestorClass(PhabricatorPolicyRule::class)
       ->execute();
 
     foreach ($rules as $key => $rule) {
diff --git a/src/applications/policy/query/PhabricatorPolicyQuery.php b/src/applications/policy/query/PhabricatorPolicyQuery.php
index 1dbdcf2369..e51e159bbd 100644
--- a/src/applications/policy/query/PhabricatorPolicyQuery.php
+++ b/src/applications/policy/query/PhabricatorPolicyQuery.php
@@ -354,7 +354,7 @@ final class PhabricatorPolicyQuery
 
   public static function getObjectPolicyRules($object) {
     $rules = id(new PhutilClassMapQuery())
-      ->setAncestorClass('PhabricatorPolicyRule')
+      ->setAncestorClass(PhabricatorPolicyRule::class)
       ->execute();
 
     $results = array();
diff --git a/src/applications/reference/src/controller/RemarkupReferenceController.php b/src/applications/reference/src/controller/RemarkupReferenceController.php
index 749ebd5b24..5773cfa00c 100644
--- a/src/applications/reference/src/controller/RemarkupReferenceController.php
+++ b/src/applications/reference/src/controller/RemarkupReferenceController.php
@@ -751,7 +751,7 @@ exit **Fullscreen** mode by clicking the button again or by pressing escape.
 EOTEXT;
 
     $remarkup_syntax_documentation_providers = id(new PhutilClassMapQuery())
-      ->setAncestorClass('RemarkupSyntaxDocumentationProvider')
+      ->setAncestorClass(RemarkupSyntaxDocumentationProvider::class)
       ->execute();
 
     // add custom Remarkup help
diff --git a/src/applications/search/fulltextstorage/PhabricatorFerretFulltextStorageEngine.php b/src/applications/search/fulltextstorage/PhabricatorFerretFulltextStorageEngine.php
index 54135b6bf2..d77b57e4be 100644
--- a/src/applications/search/fulltextstorage/PhabricatorFerretFulltextStorageEngine.php
+++ b/src/applications/search/fulltextstorage/PhabricatorFerretFulltextStorageEngine.php
@@ -29,7 +29,7 @@ final class PhabricatorFerretFulltextStorageEngine
 
   public function executeSearch(PhabricatorSavedQuery $query) {
     $all_objects = id(new PhutilClassMapQuery())
-      ->setAncestorClass('PhabricatorFerretInterface')
+      ->setAncestorClass(PhabricatorFerretInterface::class)
       ->execute();
 
     $type_map = array();
diff --git a/src/applications/search/garbagecollector/PhabricatorSearchFerretNgramGarbageCollector.php b/src/applications/search/garbagecollector/PhabricatorSearchFerretNgramGarbageCollector.php
index f2c43743f6..6a43b9aad2 100644
--- a/src/applications/search/garbagecollector/PhabricatorSearchFerretNgramGarbageCollector.php
+++ b/src/applications/search/garbagecollector/PhabricatorSearchFerretNgramGarbageCollector.php
@@ -15,7 +15,7 @@ final class PhabricatorSearchFerretNgramGarbageCollector
 
   protected function collectGarbage() {
     $all_objects = id(new PhutilClassMapQuery())
-      ->setAncestorClass('PhabricatorFerretInterface')
+      ->setAncestorClass(PhabricatorFerretInterface::class)
       ->execute();
 
     $did_collect = false;
diff --git a/src/applications/search/management/PhabricatorSearchManagementIndexWorkflow.php b/src/applications/search/management/PhabricatorSearchManagementIndexWorkflow.php
index b60a3d75f0..be0bc22569 100644
--- a/src/applications/search/management/PhabricatorSearchManagementIndexWorkflow.php
+++ b/src/applications/search/management/PhabricatorSearchManagementIndexWorkflow.php
@@ -316,7 +316,7 @@ final class PhabricatorSearchManagementIndexWorkflow
 
   private function getIndexableObjectsByTypes(array $types) {
     $objects = id(new PhutilClassMapQuery())
-      ->setAncestorClass('PhabricatorIndexableInterface')
+      ->setAncestorClass(PhabricatorIndexableInterface::class)
       ->execute();
 
     $type_map = array();
diff --git a/src/applications/search/management/PhabricatorSearchManagementNgramsWorkflow.php b/src/applications/search/management/PhabricatorSearchManagementNgramsWorkflow.php
index 3d87378849..20d4e298a0 100644
--- a/src/applications/search/management/PhabricatorSearchManagementNgramsWorkflow.php
+++ b/src/applications/search/management/PhabricatorSearchManagementNgramsWorkflow.php
@@ -56,7 +56,7 @@ final class PhabricatorSearchManagementNgramsWorkflow
     }
 
     $all_objects = id(new PhutilClassMapQuery())
-      ->setAncestorClass('PhabricatorFerretInterface')
+      ->setAncestorClass(PhabricatorFerretInterface::class)
       ->execute();
 
     foreach ($all_objects as $object) {
diff --git a/src/applications/search/query/PhabricatorSearchApplicationSearchEngine.php b/src/applications/search/query/PhabricatorSearchApplicationSearchEngine.php
index e251d23e6f..798cfb6c95 100644
--- a/src/applications/search/query/PhabricatorSearchApplicationSearchEngine.php
+++ b/src/applications/search/query/PhabricatorSearchApplicationSearchEngine.php
@@ -218,7 +218,7 @@ final class PhabricatorSearchApplicationSearchEngine
     // results. It would be nice to do this more elegantly.
 
     $objects = id(new PhutilClassMapQuery())
-      ->setAncestorClass('PhabricatorFulltextInterface')
+      ->setAncestorClass(PhabricatorFulltextInterface::class)
       ->execute();
 
     $type_map = array();
diff --git a/src/applications/settings/panel/PhabricatorEmailPreferencesSettingsPanel.php b/src/applications/settings/panel/PhabricatorEmailPreferencesSettingsPanel.php
index 52451a985e..abe85b64c5 100644
--- a/src/applications/settings/panel/PhabricatorEmailPreferencesSettingsPanel.php
+++ b/src/applications/settings/panel/PhabricatorEmailPreferencesSettingsPanel.php
@@ -148,7 +148,7 @@ final class PhabricatorEmailPreferencesSettingsPanel
 
   private function getAllEditorsWithTags(?PhabricatorUser $user = null) {
     $editors = id(new PhutilClassMapQuery())
-      ->setAncestorClass('PhabricatorApplicationTransactionEditor')
+      ->setAncestorClass(PhabricatorApplicationTransactionEditor::class)
       ->setFilterMethod('getMailTagsMap')
       ->execute();
 
diff --git a/src/applications/transactions/bulk/management/PhabricatorBulkManagementExportWorkflow.php b/src/applications/transactions/bulk/management/PhabricatorBulkManagementExportWorkflow.php
index 87de9ee37b..2dd543d031 100644
--- a/src/applications/transactions/bulk/management/PhabricatorBulkManagementExportWorkflow.php
+++ b/src/applications/transactions/bulk/management/PhabricatorBulkManagementExportWorkflow.php
@@ -160,7 +160,7 @@ final class PhabricatorBulkManagementExportWorkflow
     }
 
     $engine_classes = id(new PhutilClassMapQuery())
-      ->setAncestorClass('PhabricatorApplicationSearchEngine')
+      ->setAncestorClass(PhabricatorApplicationSearchEngine::class)
       ->execute();
 
     $class = $args->getArg('class');
diff --git a/src/applications/transactions/phid/PhabricatorApplicationTransactionTransactionPHIDType.php b/src/applications/transactions/phid/PhabricatorApplicationTransactionTransactionPHIDType.php
index 796f68e2cc..917b903801 100644
--- a/src/applications/transactions/phid/PhabricatorApplicationTransactionTransactionPHIDType.php
+++ b/src/applications/transactions/phid/PhabricatorApplicationTransactionTransactionPHIDType.php
@@ -33,7 +33,7 @@ final class PhabricatorApplicationTransactionTransactionPHIDType
     static $queries;
     if ($queries === null) {
       $objects = id(new PhutilClassMapQuery())
-        ->setAncestorClass('PhabricatorApplicationTransactionQuery')
+        ->setAncestorClass(PhabricatorApplicationTransactionQuery::class)
         ->execute();
 
       $queries = array();
diff --git a/src/applications/transactions/storage/PhabricatorModularTransaction.php b/src/applications/transactions/storage/PhabricatorModularTransaction.php
index f7750989c4..4633010e67 100644
--- a/src/applications/transactions/storage/PhabricatorModularTransaction.php
+++ b/src/applications/transactions/storage/PhabricatorModularTransaction.php
@@ -33,7 +33,7 @@ abstract class PhabricatorModularTransaction
 
     // Add core transaction types.
     $types += id(new PhutilClassMapQuery())
-      ->setAncestorClass('PhabricatorCoreTransactionType')
+      ->setAncestorClass(PhabricatorCoreTransactionType::class)
       ->setUniqueMethod('getTransactionTypeConstant')
       ->execute();
 
diff --git a/src/applications/transactions/typeahead/PhabricatorTransactionsObjectTypeDatasource.php b/src/applications/transactions/typeahead/PhabricatorTransactionsObjectTypeDatasource.php
index d515b8303a..988fdb779c 100644
--- a/src/applications/transactions/typeahead/PhabricatorTransactionsObjectTypeDatasource.php
+++ b/src/applications/transactions/typeahead/PhabricatorTransactionsObjectTypeDatasource.php
@@ -26,7 +26,7 @@ final class PhabricatorTransactionsObjectTypeDatasource
 
   private function buildResults() {
     $queries = id(new PhutilClassMapQuery())
-      ->setAncestorClass('PhabricatorApplicationTransactionQuery')
+      ->setAncestorClass(PhabricatorApplicationTransactionQuery::class)
       ->execute();
 
     $phid_types = PhabricatorPHIDType::getAllTypes();
diff --git a/src/applications/typeahead/controller/PhabricatorTypeaheadFunctionHelpController.php b/src/applications/typeahead/controller/PhabricatorTypeaheadFunctionHelpController.php
index 6bde2807d6..f576eaa717 100644
--- a/src/applications/typeahead/controller/PhabricatorTypeaheadFunctionHelpController.php
+++ b/src/applications/typeahead/controller/PhabricatorTypeaheadFunctionHelpController.php
@@ -12,7 +12,7 @@ final class PhabricatorTypeaheadFunctionHelpController
     $class = $request->getURIData('class');
 
     $sources = id(new PhutilClassMapQuery())
-      ->setAncestorClass('PhabricatorTypeaheadDatasource')
+      ->setAncestorClass(PhabricatorTypeaheadDatasource::class)
       ->execute();
 
     if (!isset($sources[$class])) {
diff --git a/src/applications/typeahead/controller/PhabricatorTypeaheadModularDatasourceController.php b/src/applications/typeahead/controller/PhabricatorTypeaheadModularDatasourceController.php
index b1d67d93da..284b5d0e51 100644
--- a/src/applications/typeahead/controller/PhabricatorTypeaheadModularDatasourceController.php
+++ b/src/applications/typeahead/controller/PhabricatorTypeaheadModularDatasourceController.php
@@ -30,7 +30,7 @@ final class PhabricatorTypeaheadModularDatasourceController
     $class = nonempty($request->getURIData('class'), $request->getStr('class'));
 
     $sources = id(new PhutilClassMapQuery())
-      ->setAncestorClass('PhabricatorTypeaheadDatasource')
+      ->setAncestorClass(PhabricatorTypeaheadDatasource::class)
       ->execute();
 
     if (isset($sources[$class])) {
diff --git a/src/applications/uiexample/controller/PhabricatorUIExampleRenderController.php b/src/applications/uiexample/controller/PhabricatorUIExampleRenderController.php
index 8f1aaa8a2e..041e81103c 100644
--- a/src/applications/uiexample/controller/PhabricatorUIExampleRenderController.php
+++ b/src/applications/uiexample/controller/PhabricatorUIExampleRenderController.php
@@ -10,7 +10,7 @@ final class PhabricatorUIExampleRenderController extends PhabricatorController {
     $id = $request->getURIData('class');
 
     $classes = id(new PhutilClassMapQuery())
-      ->setAncestorClass('PhabricatorUIExample')
+      ->setAncestorClass(PhabricatorUIExample::class)
       ->setSortMethod('getName')
       ->execute();
 
diff --git a/src/infrastructure/cluster/search/PhabricatorSearchService.php b/src/infrastructure/cluster/search/PhabricatorSearchService.php
index 89534b810a..1515e3d224 100644
--- a/src/infrastructure/cluster/search/PhabricatorSearchService.php
+++ b/src/infrastructure/cluster/search/PhabricatorSearchService.php
@@ -186,7 +186,7 @@ class PhabricatorSearchService
    */
   public static function loadAllFulltextStorageEngines() {
     return id(new PhutilClassMapQuery())
-    ->setAncestorClass('PhabricatorFulltextStorageEngine')
+    ->setAncestorClass(PhabricatorFulltextStorageEngine::class)
     ->setUniqueMethod('getEngineIdentifier')
     ->execute();
   }
diff --git a/src/infrastructure/daemon/garbagecollector/management/PhabricatorGarbageCollectorManagementCompactEdgesWorkflow.php b/src/infrastructure/daemon/garbagecollector/management/PhabricatorGarbageCollectorManagementCompactEdgesWorkflow.php
index c47d159850..f5f7650425 100644
--- a/src/infrastructure/daemon/garbagecollector/management/PhabricatorGarbageCollectorManagementCompactEdgesWorkflow.php
+++ b/src/infrastructure/daemon/garbagecollector/management/PhabricatorGarbageCollectorManagementCompactEdgesWorkflow.php
@@ -16,7 +16,7 @@ final class PhabricatorGarbageCollectorManagementCompactEdgesWorkflow
 
   public function execute(PhutilArgumentParser $args) {
     $tables = id(new PhutilClassMapQuery())
-      ->setAncestorClass('PhabricatorApplicationTransaction')
+      ->setAncestorClass(PhabricatorApplicationTransaction::class)
       ->execute();
 
     foreach ($tables as $table) {
diff --git a/src/infrastructure/env/PhabricatorEnv.php b/src/infrastructure/env/PhabricatorEnv.php
index cc59f99dda..15f6efe22c 100644
--- a/src/infrastructure/env/PhabricatorEnv.php
+++ b/src/infrastructure/env/PhabricatorEnv.php
@@ -220,7 +220,7 @@ final class PhabricatorEnv extends Phobject {
 
     // If this install has site config sources, load them now.
     $site_sources = id(new PhutilClassMapQuery())
-      ->setAncestorClass('PhabricatorConfigSiteSource')
+      ->setAncestorClass(PhabricatorConfigSiteSource::class)
       ->setSortMethod('getPriority')
       ->execute();
 
diff --git a/src/infrastructure/events/PhabricatorEventEngine.php b/src/infrastructure/events/PhabricatorEventEngine.php
index dd2cc1e4a2..a97263bbf1 100644
--- a/src/infrastructure/events/PhabricatorEventEngine.php
+++ b/src/infrastructure/events/PhabricatorEventEngine.php
@@ -10,7 +10,7 @@ final class PhabricatorEventEngine extends Phobject {
 
     // Load automatic listeners.
     $listeners = id(new PhutilClassMapQuery())
-      ->setAncestorClass('PhabricatorAutoEventListener')
+      ->setAncestorClass(PhabricatorAutoEventListener::class)
       ->execute();
 
     // Load configured listeners.
diff --git a/src/infrastructure/markup/PhabricatorMarkupEngine.php b/src/infrastructure/markup/PhabricatorMarkupEngine.php
index 9c723c21f5..33062e346b 100644
--- a/src/infrastructure/markup/PhabricatorMarkupEngine.php
+++ b/src/infrastructure/markup/PhabricatorMarkupEngine.php
@@ -717,13 +717,13 @@ final class PhabricatorMarkupEngine extends Phobject {
 
   private static function loadCustomInlineRules() {
     return id(new PhutilClassMapQuery())
-      ->setAncestorClass('PhabricatorRemarkupCustomInlineRule')
+      ->setAncestorClass(PhabricatorRemarkupCustomInlineRule::class)
       ->execute();
   }
 
   private static function loadCustomBlockRules() {
     return id(new PhutilClassMapQuery())
-      ->setAncestorClass('PhabricatorRemarkupCustomBlockRule')
+      ->setAncestorClass(PhabricatorRemarkupCustomBlockRule::class)
       ->execute();
   }
 
diff --git a/src/infrastructure/markup/blockrule/PhutilRemarkupInterpreterBlockRule.php b/src/infrastructure/markup/blockrule/PhutilRemarkupInterpreterBlockRule.php
index 5585ddf541..93de636daf 100644
--- a/src/infrastructure/markup/blockrule/PhutilRemarkupInterpreterBlockRule.php
+++ b/src/infrastructure/markup/blockrule/PhutilRemarkupInterpreterBlockRule.php
@@ -19,7 +19,7 @@ final class PhutilRemarkupInterpreterBlockRule extends PhutilRemarkupBlockRule {
    */
   private function getStartBlockPattern() {
     $interpreters = id(new PhutilClassMapQuery())
-      ->setAncestorClass('PhutilRemarkupBlockInterpreter')
+      ->setAncestorClass(PhutilRemarkupBlockInterpreter::class)
       ->execute();
     $interpreters_regex = mpull($interpreters, 'getInterpreterName');
     $interpreters_regex = array_map('preg_quote', $interpreters_regex);
@@ -63,7 +63,7 @@ final class PhutilRemarkupInterpreterBlockRule extends PhutilRemarkupBlockRule {
     }
 
     $interpreters = id(new PhutilClassMapQuery())
-      ->setAncestorClass('PhutilRemarkupBlockInterpreter')
+      ->setAncestorClass(PhutilRemarkupBlockInterpreter::class)
       ->execute();
 
     foreach ($interpreters as $interpreter) {
diff --git a/support/aphlict/server/aphlict_launcher.php b/support/aphlict/server/aphlict_launcher.php
index af644c58a1..b1b74d23fa 100755
--- a/support/aphlict/server/aphlict_launcher.php
+++ b/support/aphlict/server/aphlict_launcher.php
@@ -17,7 +17,7 @@ EOSYNOPSIS
 $args->parseStandardArguments();
 
 $workflows = id(new PhutilClassMapQuery())
-  ->setAncestorClass('PhabricatorAphlictManagementWorkflow')
+  ->setAncestorClass(PhabricatorAphlictManagementWorkflow::class)
   ->execute();
 $workflows[] = new PhutilHelpArgumentWorkflow();
 $args->parseWorkflows($workflows);