diff --git a/src/__phutil_library_map__.php b/src/__phutil_library_map__.php
--- a/src/__phutil_library_map__.php
+++ b/src/__phutil_library_map__.php
@@ -485,10 +485,15 @@
     'xsprintf_uri' => 'xsprintf/urisprintf.php',
   ),
   'xmap' => array(
+    'AASTNode' => 'Phobject',
     'AASTNodeList' => array(
+      'Phobject',
       'Countable',
       'Iterator',
     ),
+    'AASTToken' => 'Phobject',
+    'AASTTree' => 'Phobject',
+    'AbstractDirectedGraph' => 'Phobject',
     'AbstractDirectedGraphTestCase' => 'PhutilTestCase',
     'AphrontAccessDeniedQueryException' => 'AphrontRecoverableQueryException',
     'AphrontBaseMySQLDatabaseConnection' => 'AphrontDatabaseConnection',
@@ -496,7 +501,11 @@
     'AphrontConnectionLostQueryException' => 'AphrontRecoverableQueryException',
     'AphrontConnectionQueryException' => 'AphrontQueryException',
     'AphrontCountQueryException' => 'AphrontQueryException',
-    'AphrontDatabaseConnection' => 'PhutilQsprintfInterface',
+    'AphrontDatabaseConnection' => array(
+      'Phobject',
+      'PhutilQsprintfInterface',
+    ),
+    'AphrontDatabaseTransactionState' => 'Phobject',
     'AphrontDeadlockQueryException' => 'AphrontRecoverableQueryException',
     'AphrontDuplicateKeyQueryException' => 'AphrontQueryException',
     'AphrontIsolatedDatabaseConnection' => 'AphrontDatabaseConnection',
@@ -508,18 +517,28 @@
     'AphrontQueryException' => 'Exception',
     'AphrontRecoverableQueryException' => 'AphrontQueryException',
     'AphrontSchemaQueryException' => 'AphrontQueryException',
+    'AphrontScopedUnguardedWriteCapability' => 'Phobject',
+    'AphrontWriteGuard' => 'Phobject',
     'BaseHTTPFuture' => 'Future',
     'CommandException' => 'Exception',
+    'ConduitClient' => 'Phobject',
     'ConduitClientException' => 'Exception',
     'ConduitClientTestCase' => 'PhutilTestCase',
     'ConduitFuture' => 'FutureProxy',
     'ExecFuture' => 'Future',
     'ExecFutureTestCase' => 'PhutilTestCase',
     'ExecPassthruTestCase' => 'PhutilTestCase',
+    'FileFinder' => 'Phobject',
     'FileFinderTestCase' => 'PhutilTestCase',
+    'FileList' => 'Phobject',
+    'Filesystem' => 'Phobject',
     'FilesystemException' => 'Exception',
     'FilesystemTestCase' => 'PhutilTestCase',
-    'FutureIterator' => 'Iterator',
+    'Future' => 'Phobject',
+    'FutureIterator' => array(
+      'Phobject',
+      'Iterator',
+    ),
     'FutureIteratorTestCase' => 'PhutilTestCase',
     'FutureProxy' => 'Future',
     'HTTPFuture' => 'BaseHTTPFuture',
@@ -531,13 +550,19 @@
     'HTTPFutureTransportResponseStatus' => 'HTTPFutureResponseStatus',
     'HTTPSFuture' => 'BaseHTTPFuture',
     'ImmediateFuture' => 'Future',
-    'LinesOfALarge' => 'Iterator',
+    'LinesOfALarge' => array(
+      'Phobject',
+      'Iterator',
+    ),
     'LinesOfALargeExecFuture' => 'LinesOfALarge',
     'LinesOfALargeExecFutureTestCase' => 'PhutilTestCase',
     'LinesOfALargeFile' => 'LinesOfALarge',
     'LinesOfALargeFileTestCase' => 'PhutilTestCase',
+    'MFilterTestHelper' => 'Phobject',
     'PHPASTParserTestCase' => 'PhutilTestCase',
+    'PhageAgentBootloader' => 'Phobject',
     'PhageAgentTestCase' => 'PhutilTestCase',
+    'PhagePHPAgent' => 'Phobject',
     'PhagePHPAgentBootloader' => 'PhageAgentBootloader',
     'Phobject' => 'Iterator',
     'PhutilAPCKeyValueCache' => 'PhutilKeyValueCache',
@@ -548,11 +573,14 @@
     'PhutilAggregateException' => 'Exception',
     'PhutilAllCapsEnglishLocale' => 'PhutilLocale',
     'PhutilAmazonAuthAdapter' => 'PhutilOAuthAuthAdapter',
+    'PhutilArgumentParser' => 'Phobject',
     'PhutilArgumentParserException' => 'Exception',
     'PhutilArgumentParserTestCase' => 'PhutilTestCase',
+    'PhutilArgumentSpecification' => 'Phobject',
     'PhutilArgumentSpecificationException' => 'PhutilArgumentParserException',
     'PhutilArgumentSpecificationTestCase' => 'PhutilTestCase',
     'PhutilArgumentUsageException' => 'PhutilArgumentParserException',
+    'PhutilArgumentWorkflow' => 'Phobject',
     'PhutilArray' => array(
       'Phobject',
       'Countable',
@@ -563,58 +591,93 @@
     'PhutilArrayWithDefaultValue' => 'PhutilArray',
     'PhutilAsanaAuthAdapter' => 'PhutilOAuthAuthAdapter',
     'PhutilAsanaFuture' => 'FutureProxy',
+    'PhutilAuthAdapter' => 'Phobject',
     'PhutilAuthConfigurationException' => 'PhutilAuthException',
     'PhutilAuthCredentialException' => 'PhutilAuthException',
     'PhutilAuthException' => 'Exception',
     'PhutilAuthUserAbortedException' => 'PhutilAuthException',
+    'PhutilBallOfPHP' => 'Phobject',
     'PhutilBitbucketAuthAdapter' => 'PhutilOAuth1AuthAdapter',
     'PhutilBootloaderException' => 'Exception',
     'PhutilBritishEnglishLocale' => 'PhutilLocale',
-    'PhutilBufferedIterator' => 'Iterator',
+    'PhutilBufferedIterator' => array(
+      'Phobject',
+      'Iterator',
+    ),
     'PhutilBufferedIteratorTestCase' => 'PhutilTestCase',
+    'PhutilBugtraqParser' => 'Phobject',
     'PhutilBugtraqParserTestCase' => 'PhutilTestCase',
     'PhutilCIDRBlock' => 'Phobject',
     'PhutilCIDRList' => 'Phobject',
     'PhutilCLikeCodeSnippetContextFreeGrammar' => 'PhutilCodeSnippetContextFreeGrammar',
     'PhutilCallbackFilterIterator' => 'FilterIterator',
+    'PhutilChannel' => 'Phobject',
     'PhutilChannelChannel' => 'PhutilChannel',
     'PhutilChannelTestCase' => 'PhutilTestCase',
-    'PhutilChunkedIterator' => 'Iterator',
+    'PhutilChunkedIterator' => array(
+      'Phobject',
+      'Iterator',
+    ),
     'PhutilChunkedIteratorTestCase' => 'PhutilTestCase',
     'PhutilCodeSnippetContextFreeGrammar' => 'PhutilContextFreeGrammar',
     'PhutilCommandString' => 'Phobject',
+    'PhutilConsole' => 'Phobject',
+    'PhutilConsoleFormatter' => 'Phobject',
+    'PhutilConsoleMessage' => 'Phobject',
     'PhutilConsoleProgressBar' => 'Phobject',
+    'PhutilConsoleServer' => 'Phobject',
     'PhutilConsoleServerChannel' => 'PhutilChannelChannel',
     'PhutilConsoleStdinNotInteractiveException' => 'Exception',
+    'PhutilConsoleSyntaxHighlighter' => 'Phobject',
     'PhutilConsoleTable' => 'Phobject',
     'PhutilConsoleWrapTestCase' => 'PhutilTestCase',
+    'PhutilContextFreeGrammar' => 'Phobject',
     'PhutilCsprintfTestCase' => 'PhutilTestCase',
     'PhutilCzechLocale' => 'PhutilLocale',
+    'PhutilDaemon' => 'Phobject',
+    'PhutilDaemonHandle' => 'Phobject',
+    'PhutilDaemonOverseer' => 'Phobject',
+    'PhutilDefaultSyntaxHighlighter' => 'Phobject',
     'PhutilDefaultSyntaxHighlighterEngine' => 'PhutilSyntaxHighlighterEngine',
     'PhutilDefaultSyntaxHighlighterEnginePygmentsFuture' => 'FutureProxy',
     'PhutilDefaultSyntaxHighlighterEngineTestCase' => 'PhutilTestCase',
+    'PhutilDeferredLog' => 'Phobject',
     'PhutilDeferredLogTestCase' => 'PhutilTestCase',
     'PhutilDirectedScalarGraph' => 'AbstractDirectedGraph',
+    'PhutilDirectoryFixture' => 'Phobject',
     'PhutilDirectoryKeyValueCache' => 'PhutilKeyValueCache',
     'PhutilDisqusAuthAdapter' => 'PhutilOAuthAuthAdapter',
+    'PhutilDivinerSyntaxHighlighter' => 'Phobject',
+    'PhutilDocblockParser' => 'Phobject',
     'PhutilDocblockParserTestCase' => 'PhutilTestCase',
+    'PhutilEditDistanceMatrix' => 'Phobject',
     'PhutilEditDistanceMatrixTestCase' => 'PhutilTestCase',
+    'PhutilEditorConfig' => 'Phobject',
     'PhutilEditorConfigTestCase' => 'PhutilTestCase',
+    'PhutilEmailAddress' => 'Phobject',
     'PhutilEmailAddressTestCase' => 'PhutilTestCase',
     'PhutilEmptyAuthAdapter' => 'PhutilAuthAdapter',
+    'PhutilErrorHandler' => 'Phobject',
     'PhutilErrorHandlerTestCase' => 'PhutilTestCase',
     'PhutilErrorTrap' => 'Phobject',
+    'PhutilEvent' => 'Phobject',
+    'PhutilEventConstants' => 'Phobject',
+    'PhutilEventEngine' => 'Phobject',
+    'PhutilEventListener' => 'Phobject',
     'PhutilEventType' => 'PhutilEventConstants',
     'PhutilExampleBufferedIterator' => 'PhutilBufferedIterator',
     'PhutilExcessiveServiceCallsDaemon' => 'PhutilTortureTestDaemon',
     'PhutilExecChannel' => 'PhutilChannel',
     'PhutilExecPassthru' => 'Phobject',
+    'PhutilExecutionEnvironment' => 'Phobject',
     'PhutilExtensionsTestCase' => 'PhutilTestCase',
     'PhutilFacebookAuthAdapter' => 'PhutilOAuthAuthAdapter',
     'PhutilFatalDaemon' => 'PhutilTortureTestDaemon',
     'PhutilFileLock' => 'PhutilLock',
     'PhutilFileLockTestCase' => 'PhutilTestCase',
+    'PhutilFileTree' => 'Phobject',
     'PhutilGitHubAuthAdapter' => 'PhutilOAuthAuthAdapter',
+    'PhutilGitURI' => 'Phobject',
     'PhutilGitURITestCase' => 'PhutilTestCase',
     'PhutilGoogleAuthAdapter' => 'PhutilOAuthAuthAdapter',
     'PhutilHangForeverDaemon' => 'PhutilTortureTestDaemon',
@@ -625,32 +688,43 @@
     'PhutilIPAddress' => 'Phobject',
     'PhutilIPAddressTestCase' => 'PhutilTestCase',
     'PhutilInRequestKeyValueCache' => 'PhutilKeyValueCache',
+    'PhutilInteractiveEditor' => 'Phobject',
     'PhutilInvalidRuleParserGeneratorException' => 'PhutilParserGeneratorException',
     'PhutilInvalidStateException' => 'Exception',
     'PhutilInvalidStateExceptionTestCase' => 'PhutilTestCase',
+    'PhutilInvisibleSyntaxHighlighter' => 'Phobject',
     'PhutilIrreducibleRuleParserGeneratorException' => 'PhutilParserGeneratorException',
     'PhutilJIRAAuthAdapter' => 'PhutilOAuth1AuthAdapter',
+    'PhutilJSON' => 'Phobject',
+    'PhutilJSONParser' => 'Phobject',
     'PhutilJSONParserException' => 'Exception',
     'PhutilJSONParserTestCase' => 'PhutilTestCase',
     'PhutilJSONProtocolChannel' => 'PhutilProtocolChannel',
     'PhutilJSONProtocolChannelTestCase' => 'PhutilTestCase',
     'PhutilJSONTestCase' => 'PhutilTestCase',
     'PhutilJavaCodeSnippetContextFreeGrammar' => 'PhutilCLikeCodeSnippetContextFreeGrammar',
+    'PhutilKeyValueCache' => 'Phobject',
     'PhutilKeyValueCacheNamespace' => 'PhutilKeyValueCacheProxy',
     'PhutilKeyValueCacheProfiler' => 'PhutilKeyValueCacheProxy',
     'PhutilKeyValueCacheProxy' => 'PhutilKeyValueCache',
     'PhutilKeyValueCacheStack' => 'PhutilKeyValueCache',
     'PhutilKeyValueCacheTestCase' => 'PhutilTestCase',
     'PhutilLDAPAuthAdapter' => 'PhutilAuthAdapter',
+    'PhutilLanguageGuesser' => 'Phobject',
     'PhutilLanguageGuesserTestCase' => 'PhutilTestCase',
+    'PhutilLexer' => 'Phobject',
     'PhutilLexerSyntaxHighlighter' => 'PhutilSyntaxHighlighter',
     'PhutilLibraryConflictException' => 'Exception',
+    'PhutilLibraryMapBuilder' => 'Phobject',
     'PhutilLibraryTestCase' => 'PhutilTestCase',
     'PhutilLipsumContextFreeGrammar' => 'PhutilContextFreeGrammar',
     'PhutilLocale' => 'Phobject',
+    'PhutilLock' => 'Phobject',
     'PhutilLockException' => 'Exception',
     'PhutilLogFileChannel' => 'PhutilChannelChannel',
+    'PhutilLunarPhase' => 'Phobject',
     'PhutilLunarPhaseTestCase' => 'PhutilTestCase',
+    'PhutilMarkupEngine' => 'Phobject',
     'PhutilMarkupTestCase' => 'PhutilTestCase',
     'PhutilMemcacheKeyValueCache' => 'PhutilKeyValueCache',
     'PhutilMethodNotImplementedException' => 'Exception',
@@ -658,11 +732,14 @@
     'PhutilMissingSymbolException' => 'Exception',
     'PhutilModuleUtilsTestCase' => 'PhutilTestCase',
     'PhutilNiceDaemon' => 'PhutilTortureTestDaemon',
+    'PhutilNumber' => 'Phobject',
     'PhutilOAuth1AuthAdapter' => 'PhutilAuthAdapter',
     'PhutilOAuth1Future' => 'FutureProxy',
     'PhutilOAuth1FutureTestCase' => 'PhutilTestCase',
     'PhutilOAuthAuthAdapter' => 'PhutilAuthAdapter',
     'PhutilOnDiskKeyValueCache' => 'PhutilKeyValueCache',
+    'PhutilOpaqueEnvelope' => 'Phobject',
+    'PhutilOpaqueEnvelopeKey' => 'Phobject',
     'PhutilOpaqueEnvelopeTestCase' => 'PhutilTestCase',
     'PhutilPHPCodeSnippetContextFreeGrammar' => 'PhutilCLikeCodeSnippetContextFreeGrammar',
     'PhutilPHPFragmentLexer' => 'PhutilLexer',
@@ -670,10 +747,14 @@
     'PhutilPHPFragmentLexerTestCase' => 'PhutilTestCase',
     'PhutilPHPObjectProtocolChannel' => 'PhutilProtocolChannel',
     'PhutilPHPObjectProtocolChannelTestCase' => 'PhutilTestCase',
+    'PhutilParserGenerator' => 'Phobject',
     'PhutilParserGeneratorException' => 'Exception',
     'PhutilParserGeneratorTestCase' => 'PhutilTestCase',
     'PhutilPayPalAPIFuture' => 'FutureProxy',
-    'PhutilPersonTest' => 'PhutilPerson',
+    'PhutilPersonTest' => array(
+      'Phobject',
+      'PhutilPerson',
+    ),
     'PhutilPersonaAuthAdapter' => 'PhutilAuthAdapter',
     'PhutilPhabricatorAuthAdapter' => 'PhutilOAuthAuthAdapter',
     'PhutilPhobjectTestCase' => 'PhutilTestCase',
@@ -681,11 +762,18 @@
     'PhutilProcessGroupDaemon' => 'PhutilTortureTestDaemon',
     'PhutilProtocolChannel' => 'PhutilChannelChannel',
     'PhutilProxyException' => 'Exception',
+    'PhutilPygmentsSyntaxHighlighter' => 'Phobject',
     'PhutilPythonFragmentLexer' => 'PhutilLexer',
+    'PhutilQueryStringParser' => 'Phobject',
     'PhutilQueryStringParserTestCase' => 'PhutilTestCase',
+    'PhutilRainbowSyntaxHighlighter' => 'Phobject',
     'PhutilRawEnglishLocale' => 'PhutilLocale',
+    'PhutilReadableSerializer' => 'Phobject',
     'PhutilReadableSerializerTestCase' => 'PhutilTestCase',
     'PhutilRealNameContextFreeGrammar' => 'PhutilContextFreeGrammar',
+    'PhutilRemarkupBlockInterpreter' => 'Phobject',
+    'PhutilRemarkupBlockRule' => 'Phobject',
+    'PhutilRemarkupBlockStorage' => 'Phobject',
     'PhutilRemarkupBoldRule' => 'PhutilRemarkupRule',
     'PhutilRemarkupCodeBlockRule' => 'PhutilRemarkupBlockRule',
     'PhutilRemarkupDefaultBlockRule' => 'PhutilRemarkupBlockRule',
@@ -707,20 +795,28 @@
     'PhutilRemarkupNoteBlockRule' => 'PhutilRemarkupBlockRule',
     'PhutilRemarkupQuotesBlockRule' => 'PhutilRemarkupBlockRule',
     'PhutilRemarkupReplyBlockRule' => 'PhutilRemarkupBlockRule',
+    'PhutilRemarkupRule' => 'Phobject',
     'PhutilRemarkupSimpleTableBlockRule' => 'PhutilRemarkupBlockRule',
     'PhutilRemarkupTableBlockRule' => 'PhutilRemarkupBlockRule',
     'PhutilRemarkupTestInterpreterRule' => 'PhutilRemarkupBlockInterpreter',
     'PhutilRemarkupUnderlineRule' => 'PhutilRemarkupRule',
     'PhutilRope' => 'Phobject',
     'PhutilRopeTestCase' => 'PhutilTestCase',
+    'PhutilSafeHTML' => 'Phobject',
     'PhutilSafeHTMLTestCase' => 'PhutilTestCase',
     'PhutilSaturateStdoutDaemon' => 'PhutilTortureTestDaemon',
+    'PhutilServiceProfiler' => 'Phobject',
     'PhutilShellLexer' => 'PhutilLexer',
     'PhutilShellLexerTestCase' => 'PhutilTestCase',
+    'PhutilSimpleOptions' => 'Phobject',
     'PhutilSimpleOptionsLexer' => 'PhutilLexer',
     'PhutilSimpleOptionsLexerTestCase' => 'PhutilTestCase',
     'PhutilSimpleOptionsTestCase' => 'PhutilTestCase',
     'PhutilSocketChannel' => 'PhutilChannel',
+    'PhutilSprite' => 'Phobject',
+    'PhutilSpriteSheet' => 'Phobject',
+    'PhutilSyntaxHighlighter' => 'Phobject',
+    'PhutilSyntaxHighlighterEngine' => 'Phobject',
     'PhutilSyntaxHighlighterException' => 'Exception',
     'PhutilSystem' => 'Phobject',
     'PhutilSystemTestCase' => 'PhutilTestCase',
@@ -728,6 +824,7 @@
     'PhutilTestPhobject' => 'Phobject',
     'PhutilTortureTestDaemon' => 'PhutilDaemon',
     'PhutilTranslation' => 'Phobject',
+    'PhutilTranslator' => 'Phobject',
     'PhutilTranslatorTestCase' => 'PhutilTestCase',
     'PhutilTsprintfTestCase' => 'PhutilTestCase',
     'PhutilTwitchAuthAdapter' => 'PhutilOAuthAuthAdapter',
@@ -737,7 +834,9 @@
     'PhutilTypeExtraParametersException' => 'Exception',
     'PhutilTypeLexer' => 'PhutilLexer',
     'PhutilTypeMissingParametersException' => 'Exception',
+    'PhutilTypeSpec' => 'Phobject',
     'PhutilTypeSpecTestCase' => 'PhutilTestCase',
+    'PhutilURI' => 'Phobject',
     'PhutilURITestCase' => 'PhutilTestCase',
     'PhutilUSEnglishLocale' => 'PhutilLocale',
     'PhutilUTF8StringTruncator' => 'Phobject',
@@ -750,9 +849,12 @@
     'PhutilVeryWowEnglishLocale' => 'PhutilLocale',
     'PhutilWordPressAuthAdapter' => 'PhutilOAuthAuthAdapter',
     'PhutilWordPressFuture' => 'FutureProxy',
+    'PhutilXHPASTBinary' => 'Phobject',
+    'PhutilXHPASTSyntaxHighlighter' => 'Phobject',
     'PhutilXHPASTSyntaxHighlighterFuture' => 'FutureProxy',
     'PhutilXHPASTSyntaxHighlighterTestCase' => 'PhutilTestCase',
     'QueryFuture' => 'Future',
+    'TempFile' => 'Phobject',
     'TestAbstractDirectedGraph' => 'AbstractDirectedGraph',
     'XHPASTNode' => 'AASTNode',
     'XHPASTNodeTestCase' => 'PhutilTestCase',
diff --git a/src/aphront/storage/connection/AphrontDatabaseConnection.php b/src/aphront/storage/connection/AphrontDatabaseConnection.php
--- a/src/aphront/storage/connection/AphrontDatabaseConnection.php
+++ b/src/aphront/storage/connection/AphrontDatabaseConnection.php
@@ -3,7 +3,9 @@
 /**
  * @task  xaction Transaction Management
  */
-abstract class AphrontDatabaseConnection implements PhutilQsprintfInterface {
+abstract class AphrontDatabaseConnection
+  extends Phobject
+  implements PhutilQsprintfInterface {
 
   private $transactionState;
 
diff --git a/src/aphront/storage/connection/AphrontDatabaseTransactionState.php b/src/aphront/storage/connection/AphrontDatabaseTransactionState.php
--- a/src/aphront/storage/connection/AphrontDatabaseTransactionState.php
+++ b/src/aphront/storage/connection/AphrontDatabaseTransactionState.php
@@ -3,7 +3,7 @@
 /**
  * Represents current transaction state of a connection.
  */
-final class AphrontDatabaseTransactionState {
+final class AphrontDatabaseTransactionState extends Phobject {
 
   private $depth           = 0;
   private $readLockLevel   = 0;
diff --git a/src/aphront/writeguard/AphrontScopedUnguardedWriteCapability.php b/src/aphront/writeguard/AphrontScopedUnguardedWriteCapability.php
--- a/src/aphront/writeguard/AphrontScopedUnguardedWriteCapability.php
+++ b/src/aphront/writeguard/AphrontScopedUnguardedWriteCapability.php
@@ -1,6 +1,6 @@
 <?php
 
-final class AphrontScopedUnguardedWriteCapability {
+final class AphrontScopedUnguardedWriteCapability extends Phobject {
 
   public function __destruct() {
     AphrontWriteGuard::endUnguardedWrites();
diff --git a/src/aphront/writeguard/AphrontWriteGuard.php b/src/aphront/writeguard/AphrontWriteGuard.php
--- a/src/aphront/writeguard/AphrontWriteGuard.php
+++ b/src/aphront/writeguard/AphrontWriteGuard.php
@@ -28,7 +28,7 @@
  * @task manage   Managing Write Guards
  * @task internal Internals
  */
-final class AphrontWriteGuard {
+final class AphrontWriteGuard extends Phobject {
 
   private static $instance;
   private static $allowUnguardedWrites = false;
diff --git a/src/auth/PhutilAuthAdapter.php b/src/auth/PhutilAuthAdapter.php
--- a/src/auth/PhutilAuthAdapter.php
+++ b/src/auth/PhutilAuthAdapter.php
@@ -15,7 +15,7 @@
  * configured -- only what information it is expected to be able to provide once
  * properly configured.
  */
-abstract class PhutilAuthAdapter {
+abstract class PhutilAuthAdapter extends Phobject {
 
   /**
    * Get a unique identifier associated with the identity. For most providers,
diff --git a/src/cache/PhutilKeyValueCache.php b/src/cache/PhutilKeyValueCache.php
--- a/src/cache/PhutilKeyValueCache.php
+++ b/src/cache/PhutilKeyValueCache.php
@@ -7,7 +7,7 @@
  *
  * @task  kvimpl    Key-Value Cache Implementation
  */
-abstract class PhutilKeyValueCache {
+abstract class PhutilKeyValueCache extends Phobject {
 
 
 /* -(  Key-Value Cache Implementation  )------------------------------------- */
diff --git a/src/channel/PhutilChannel.php b/src/channel/PhutilChannel.php
--- a/src/channel/PhutilChannel.php
+++ b/src/channel/PhutilChannel.php
@@ -27,7 +27,7 @@
  * @task  update  Responding to Activity
  * @task  impl    Channel Implementation
  */
-abstract class PhutilChannel {
+abstract class PhutilChannel extends Phobject {
 
   private $ibuf = '';
   private $obuf;
diff --git a/src/conduit/ConduitClient.php b/src/conduit/ConduitClient.php
--- a/src/conduit/ConduitClient.php
+++ b/src/conduit/ConduitClient.php
@@ -1,6 +1,6 @@
 <?php
 
-final class ConduitClient {
+final class ConduitClient extends Phobject {
 
   private $uri;
   private $host;
diff --git a/src/console/PhutilConsole.php b/src/console/PhutilConsole.php
--- a/src/console/PhutilConsole.php
+++ b/src/console/PhutilConsole.php
@@ -11,7 +11,7 @@
  * @task  interface   Interfacing with the User
  * @task  internal    Internals
  */
-final class PhutilConsole {
+final class PhutilConsole extends Phobject {
 
   private static $console;
 
diff --git a/src/console/PhutilConsoleFormatter.php b/src/console/PhutilConsoleFormatter.php
--- a/src/console/PhutilConsoleFormatter.php
+++ b/src/console/PhutilConsoleFormatter.php
@@ -1,6 +1,6 @@
 <?php
 
-final class PhutilConsoleFormatter {
+final class PhutilConsoleFormatter extends Phobject {
 
   private static $colorCodes = array(
     'black'   => 0,
diff --git a/src/console/PhutilConsoleMessage.php b/src/console/PhutilConsoleMessage.php
--- a/src/console/PhutilConsoleMessage.php
+++ b/src/console/PhutilConsoleMessage.php
@@ -1,6 +1,6 @@
 <?php
 
-final class PhutilConsoleMessage {
+final class PhutilConsoleMessage extends Phobject {
 
   const TYPE_CONFIRM    = 'phutil:confirm';
   const TYPE_PROMPT     = 'phutil:prompt';
diff --git a/src/console/PhutilConsoleServer.php b/src/console/PhutilConsoleServer.php
--- a/src/console/PhutilConsoleServer.php
+++ b/src/console/PhutilConsoleServer.php
@@ -1,6 +1,6 @@
 <?php
 
-final class PhutilConsoleServer {
+final class PhutilConsoleServer extends Phobject {
 
   private $clients = array();
   private $handler;
diff --git a/src/console/PhutilInteractiveEditor.php b/src/console/PhutilInteractiveEditor.php
--- a/src/console/PhutilInteractiveEditor.php
+++ b/src/console/PhutilInteractiveEditor.php
@@ -15,7 +15,7 @@
  * @task edit    Editing Interactively
  * @task config  Configuring Options
  */
-final class PhutilInteractiveEditor {
+final class PhutilInteractiveEditor extends Phobject {
 
   private $name     = '';
   private $content  = '';
diff --git a/src/daemon/PhutilDaemon.php b/src/daemon/PhutilDaemon.php
--- a/src/daemon/PhutilDaemon.php
+++ b/src/daemon/PhutilDaemon.php
@@ -40,7 +40,7 @@
  * @task overseer Communicating With the Overseer
  * @task autoscale Autoscaling Daemon Pools
  */
-abstract class PhutilDaemon {
+abstract class PhutilDaemon extends Phobject {
 
   const MESSAGETYPE_STDOUT = 'stdout';
   const MESSAGETYPE_HEARTBEAT = 'heartbeat';
diff --git a/src/daemon/PhutilDaemonHandle.php b/src/daemon/PhutilDaemonHandle.php
--- a/src/daemon/PhutilDaemonHandle.php
+++ b/src/daemon/PhutilDaemonHandle.php
@@ -1,6 +1,6 @@
 <?php
 
-final class PhutilDaemonHandle {
+final class PhutilDaemonHandle extends Phobject {
 
   const EVENT_DID_LAUNCH    = 'daemon.didLaunch';
   const EVENT_DID_LOG       = 'daemon.didLogMessage';
diff --git a/src/daemon/PhutilDaemonOverseer.php b/src/daemon/PhutilDaemonOverseer.php
--- a/src/daemon/PhutilDaemonOverseer.php
+++ b/src/daemon/PhutilDaemonOverseer.php
@@ -3,7 +3,7 @@
 /**
  * Oversees a daemon and restarts it if it fails.
  */
-final class PhutilDaemonOverseer {
+final class PhutilDaemonOverseer extends Phobject {
 
   private $argv;
   private $moreArgs;
diff --git a/src/error/PhutilErrorHandler.php b/src/error/PhutilErrorHandler.php
--- a/src/error/PhutilErrorHandler.php
+++ b/src/error/PhutilErrorHandler.php
@@ -29,7 +29,7 @@
  * @task trap     Error Traps
  * @task internal Internals
  */
-final class PhutilErrorHandler {
+final class PhutilErrorHandler extends Phobject {
 
   private static $errorListener = null;
   private static $initialized = false;
diff --git a/src/error/PhutilOpaqueEnvelope.php b/src/error/PhutilOpaqueEnvelope.php
--- a/src/error/PhutilOpaqueEnvelope.php
+++ b/src/error/PhutilOpaqueEnvelope.php
@@ -20,7 +20,7 @@
  * @task envelope Using Opaque Envelopes
  * @task internal Internals
  */
-final class PhutilOpaqueEnvelope {
+final class PhutilOpaqueEnvelope extends Phobject {
 
   private $value;
 
diff --git a/src/error/PhutilOpaqueEnvelopeKey.php b/src/error/PhutilOpaqueEnvelopeKey.php
--- a/src/error/PhutilOpaqueEnvelopeKey.php
+++ b/src/error/PhutilOpaqueEnvelopeKey.php
@@ -8,7 +8,7 @@
  *
  * @task internal Internals
  */
-final class PhutilOpaqueEnvelopeKey {
+final class PhutilOpaqueEnvelopeKey extends Phobject {
 
   private static $key;
 
diff --git a/src/events/PhutilEvent.php b/src/events/PhutilEvent.php
--- a/src/events/PhutilEvent.php
+++ b/src/events/PhutilEvent.php
@@ -3,7 +3,7 @@
 /**
  * @concrete-extensible
  */
-class PhutilEvent {
+class PhutilEvent extends Phobject {
 
   private $type;
   private $data;
diff --git a/src/events/PhutilEventEngine.php b/src/events/PhutilEventEngine.php
--- a/src/events/PhutilEventEngine.php
+++ b/src/events/PhutilEventEngine.php
@@ -1,6 +1,6 @@
 <?php
 
-final class PhutilEventEngine {
+final class PhutilEventEngine extends Phobject {
 
   private static $instance;
 
diff --git a/src/events/PhutilEventListener.php b/src/events/PhutilEventListener.php
--- a/src/events/PhutilEventListener.php
+++ b/src/events/PhutilEventListener.php
@@ -1,6 +1,6 @@
 <?php
 
-abstract class PhutilEventListener {
+abstract class PhutilEventListener extends Phobject {
 
   private $listenerID;
   private static $nextListenerID = 1;
diff --git a/src/events/constant/PhutilEventConstants.php b/src/events/constant/PhutilEventConstants.php
--- a/src/events/constant/PhutilEventConstants.php
+++ b/src/events/constant/PhutilEventConstants.php
@@ -1,3 +1,3 @@
 <?php
 
-abstract class PhutilEventConstants {}
+abstract class PhutilEventConstants extends Phobject {}
diff --git a/src/filesystem/FileFinder.php b/src/filesystem/FileFinder.php
--- a/src/filesystem/FileFinder.php
+++ b/src/filesystem/FileFinder.php
@@ -15,7 +15,7 @@
  * @task  exec      Executing the File Query
  * @task  internal  Internal
  */
-final class FileFinder {
+final class FileFinder extends Phobject {
 
   private $root;
   private $exclude = array();
diff --git a/src/filesystem/FileList.php b/src/filesystem/FileList.php
--- a/src/filesystem/FileList.php
+++ b/src/filesystem/FileList.php
@@ -18,7 +18,7 @@
  * @task create Creating a File List
  * @task test   Testing File Lists
  */
-final class FileList {
+final class FileList extends Phobject {
 
   private $files = array();
   private $dirs  = array();
diff --git a/src/filesystem/Filesystem.php b/src/filesystem/Filesystem.php
--- a/src/filesystem/Filesystem.php
+++ b/src/filesystem/Filesystem.php
@@ -15,7 +15,7 @@
  * @task exec        Executables
  * @task assert      Assertions
  */
-final class Filesystem {
+final class Filesystem extends Phobject {
 
 
 /* -(  Files  )-------------------------------------------------------------- */
diff --git a/src/filesystem/PhutilDeferredLog.php b/src/filesystem/PhutilDeferredLog.php
--- a/src/filesystem/PhutilDeferredLog.php
+++ b/src/filesystem/PhutilDeferredLog.php
@@ -36,7 +36,7 @@
  * @task write      Writing the Log
  * @task internal   Internals
  */
-final class PhutilDeferredLog {
+final class PhutilDeferredLog extends Phobject {
 
   private $file;
   private $format;
diff --git a/src/filesystem/PhutilDirectoryFixture.php b/src/filesystem/PhutilDirectoryFixture.php
--- a/src/filesystem/PhutilDirectoryFixture.php
+++ b/src/filesystem/PhutilDirectoryFixture.php
@@ -1,6 +1,6 @@
 <?php
 
-final class PhutilDirectoryFixture {
+final class PhutilDirectoryFixture extends Phobject {
 
   protected $path;
 
diff --git a/src/filesystem/PhutilFileTree.php b/src/filesystem/PhutilFileTree.php
--- a/src/filesystem/PhutilFileTree.php
+++ b/src/filesystem/PhutilFileTree.php
@@ -3,7 +3,7 @@
 /**
  * Data structure for representing filesystem directory trees.
  */
-final class PhutilFileTree {
+final class PhutilFileTree extends Phobject {
 
   private $name;
   private $fullPath;
diff --git a/src/filesystem/PhutilLock.php b/src/filesystem/PhutilLock.php
--- a/src/filesystem/PhutilLock.php
+++ b/src/filesystem/PhutilLock.php
@@ -25,7 +25,7 @@
  * @task  lock        Locking
  * @task  internal    Internals
  */
-abstract class PhutilLock {
+abstract class PhutilLock extends Phobject {
 
   private static $registeredShutdownFunction = false;
   private static $locks = array();
diff --git a/src/filesystem/TempFile.php b/src/filesystem/TempFile.php
--- a/src/filesystem/TempFile.php
+++ b/src/filesystem/TempFile.php
@@ -14,7 +14,7 @@
  * @task  config    Configuration
  * @task  internal  Internals
  */
-final class TempFile {
+final class TempFile extends Phobject {
 
   private $dir;
   private $file;
diff --git a/src/filesystem/linesofalarge/LinesOfALarge.php b/src/filesystem/linesofalarge/LinesOfALarge.php
--- a/src/filesystem/linesofalarge/LinesOfALarge.php
+++ b/src/filesystem/linesofalarge/LinesOfALarge.php
@@ -33,7 +33,7 @@
  * @task  internals Internals
  * @task  iterator  Iterator Interface
  */
-abstract class LinesOfALarge implements Iterator {
+abstract class LinesOfALarge extends Phobject implements Iterator {
 
   private $pos;
   private $buf;
diff --git a/src/future/Future.php b/src/future/Future.php
--- a/src/future/Future.php
+++ b/src/future/Future.php
@@ -5,7 +5,7 @@
  * pending computation. For a more complete overview of futures, see
  * @{article:Using Futures}.
  */
-abstract class Future {
+abstract class Future extends Phobject {
 
   protected static $handlerInstalled = null;
 
diff --git a/src/future/FutureIterator.php b/src/future/FutureIterator.php
--- a/src/future/FutureIterator.php
+++ b/src/future/FutureIterator.php
@@ -28,7 +28,7 @@
  * @task  iterator  Iterator Interface
  * @task  internal  Internals
  */
-final class FutureIterator implements Iterator {
+final class FutureIterator extends Phobject implements Iterator {
 
   protected $wait     = array();
   protected $work     = array();
diff --git a/src/grammar/PhutilContextFreeGrammar.php b/src/grammar/PhutilContextFreeGrammar.php
--- a/src/grammar/PhutilContextFreeGrammar.php
+++ b/src/grammar/PhutilContextFreeGrammar.php
@@ -3,7 +3,7 @@
 /**
  * Generate nonsense test data according to a context-free grammar definition.
  */
-abstract class PhutilContextFreeGrammar {
+abstract class PhutilContextFreeGrammar extends Phobject {
 
   private $limit = 65535;
 
diff --git a/src/internationalization/PhutilNumber.php b/src/internationalization/PhutilNumber.php
--- a/src/internationalization/PhutilNumber.php
+++ b/src/internationalization/PhutilNumber.php
@@ -1,6 +1,6 @@
 <?php
 
-final class PhutilNumber {
+final class PhutilNumber extends Phobject {
 
   private $value;
   private $decimals = 0;
diff --git a/src/internationalization/PhutilTranslator.php b/src/internationalization/PhutilTranslator.php
--- a/src/internationalization/PhutilTranslator.php
+++ b/src/internationalization/PhutilTranslator.php
@@ -1,6 +1,6 @@
 <?php
 
-final class PhutilTranslator {
+final class PhutilTranslator extends Phobject {
 
   private static $instance;
 
diff --git a/src/internationalization/__tests__/PhutilPersonTest.php b/src/internationalization/__tests__/PhutilPersonTest.php
--- a/src/internationalization/__tests__/PhutilPersonTest.php
+++ b/src/internationalization/__tests__/PhutilPersonTest.php
@@ -1,6 +1,6 @@
 <?php
 
-final class PhutilPersonTest implements PhutilPerson {
+final class PhutilPersonTest extends Phobject implements PhutilPerson {
 
   private $sex = PhutilPerson::SEX_UNKNOWN;
 
diff --git a/src/lexer/PhutilLexer.php b/src/lexer/PhutilLexer.php
--- a/src/lexer/PhutilLexer.php
+++ b/src/lexer/PhutilLexer.php
@@ -74,7 +74,7 @@
  * @task rule       Lexer Rules
  * @task tokens     Lexer Tokens
  */
-abstract class PhutilLexer {
+abstract class PhutilLexer extends Phobject {
 
   private $processedRules;
   private $lastState;
diff --git a/src/markup/PhutilMarkupEngine.php b/src/markup/PhutilMarkupEngine.php
--- a/src/markup/PhutilMarkupEngine.php
+++ b/src/markup/PhutilMarkupEngine.php
@@ -1,6 +1,6 @@
 <?php
 
-abstract class PhutilMarkupEngine {
+abstract class PhutilMarkupEngine extends Phobject {
 
   /**
    * Set a configuration parameter which the engine can read to customize how
diff --git a/src/markup/PhutilSafeHTML.php b/src/markup/PhutilSafeHTML.php
--- a/src/markup/PhutilSafeHTML.php
+++ b/src/markup/PhutilSafeHTML.php
@@ -1,6 +1,6 @@
 <?php
 
-final class PhutilSafeHTML {
+final class PhutilSafeHTML extends Phobject {
 
   private $content;
 
diff --git a/src/markup/engine/PhutilRemarkupEngine.php b/src/markup/engine/PhutilRemarkupEngine.php
--- a/src/markup/engine/PhutilRemarkupEngine.php
+++ b/src/markup/engine/PhutilRemarkupEngine.php
@@ -14,6 +14,7 @@
   private $metadata = array();
   private $states = array();
   private $postprocessRules = array();
+  private $storage;
 
   public function setConfig($key, $value) {
     $this->config[$key] = $value;
@@ -129,7 +130,7 @@
     $output = $this->flattenOutput($output);
 
     $map = $this->storage->getMap();
-    unset($this->storage);
+    $this->storage = null;
     $metadata = $this->metadata;
 
 
diff --git a/src/markup/engine/remarkup/PhutilRemarkupBlockStorage.php b/src/markup/engine/remarkup/PhutilRemarkupBlockStorage.php
--- a/src/markup/engine/remarkup/PhutilRemarkupBlockStorage.php
+++ b/src/markup/engine/remarkup/PhutilRemarkupBlockStorage.php
@@ -30,7 +30,7 @@
  *
  * This class generates keys, and stores the map of keys to replacement text.
  */
-final class PhutilRemarkupBlockStorage {
+final class PhutilRemarkupBlockStorage extends Phobject {
 
   const MAGIC_BYTE = "\1";
 
diff --git a/src/markup/engine/remarkup/blockrule/PhutilRemarkupBlockInterpreter.php b/src/markup/engine/remarkup/blockrule/PhutilRemarkupBlockInterpreter.php
--- a/src/markup/engine/remarkup/blockrule/PhutilRemarkupBlockInterpreter.php
+++ b/src/markup/engine/remarkup/blockrule/PhutilRemarkupBlockInterpreter.php
@@ -1,6 +1,6 @@
 <?php
 
-abstract class PhutilRemarkupBlockInterpreter {
+abstract class PhutilRemarkupBlockInterpreter extends Phobject {
 
   private $engine;
 
diff --git a/src/markup/engine/remarkup/blockrule/PhutilRemarkupBlockRule.php b/src/markup/engine/remarkup/blockrule/PhutilRemarkupBlockRule.php
--- a/src/markup/engine/remarkup/blockrule/PhutilRemarkupBlockRule.php
+++ b/src/markup/engine/remarkup/blockrule/PhutilRemarkupBlockRule.php
@@ -1,6 +1,6 @@
 <?php
 
-abstract class PhutilRemarkupBlockRule {
+abstract class PhutilRemarkupBlockRule extends Phobject {
 
   private $engine;
   private $rules = array();
diff --git a/src/markup/engine/remarkup/markuprule/PhutilRemarkupRule.php b/src/markup/engine/remarkup/markuprule/PhutilRemarkupRule.php
--- a/src/markup/engine/remarkup/markuprule/PhutilRemarkupRule.php
+++ b/src/markup/engine/remarkup/markuprule/PhutilRemarkupRule.php
@@ -1,6 +1,6 @@
 <?php
 
-abstract class PhutilRemarkupRule {
+abstract class PhutilRemarkupRule extends Phobject {
 
   private $engine;
   private $replaceCallback;
diff --git a/src/markup/syntax/engine/PhutilSyntaxHighlighterEngine.php b/src/markup/syntax/engine/PhutilSyntaxHighlighterEngine.php
--- a/src/markup/syntax/engine/PhutilSyntaxHighlighterEngine.php
+++ b/src/markup/syntax/engine/PhutilSyntaxHighlighterEngine.php
@@ -1,6 +1,6 @@
 <?php
 
-abstract class PhutilSyntaxHighlighterEngine {
+abstract class PhutilSyntaxHighlighterEngine extends Phobject {
 
   abstract public function setConfig($key, $value);
   abstract public function getHighlightFuture($language, $source);
diff --git a/src/markup/syntax/highlighter/PhutilConsoleSyntaxHighlighter.php b/src/markup/syntax/highlighter/PhutilConsoleSyntaxHighlighter.php
--- a/src/markup/syntax/highlighter/PhutilConsoleSyntaxHighlighter.php
+++ b/src/markup/syntax/highlighter/PhutilConsoleSyntaxHighlighter.php
@@ -4,7 +4,7 @@
  * Simple syntax highlighter for console output. We just try to highlight the
  * commands so it's easier to follow transcripts.
  */
-final class PhutilConsoleSyntaxHighlighter {
+final class PhutilConsoleSyntaxHighlighter extends Phobject {
 
   private $config = array();
   private $replaceClass;
diff --git a/src/markup/syntax/highlighter/PhutilDefaultSyntaxHighlighter.php b/src/markup/syntax/highlighter/PhutilDefaultSyntaxHighlighter.php
--- a/src/markup/syntax/highlighter/PhutilDefaultSyntaxHighlighter.php
+++ b/src/markup/syntax/highlighter/PhutilDefaultSyntaxHighlighter.php
@@ -1,6 +1,6 @@
 <?php
 
-final class PhutilDefaultSyntaxHighlighter {
+final class PhutilDefaultSyntaxHighlighter extends Phobject {
 
   public function setConfig($key, $value) {
     return $this;
diff --git a/src/markup/syntax/highlighter/PhutilDivinerSyntaxHighlighter.php b/src/markup/syntax/highlighter/PhutilDivinerSyntaxHighlighter.php
--- a/src/markup/syntax/highlighter/PhutilDivinerSyntaxHighlighter.php
+++ b/src/markup/syntax/highlighter/PhutilDivinerSyntaxHighlighter.php
@@ -4,7 +4,7 @@
  * Simple syntax highlighter for the ".diviner" format, which is just Remarkup
  * with a specific ruleset. This should also work alright for Remarkup.
  */
-final class PhutilDivinerSyntaxHighlighter {
+final class PhutilDivinerSyntaxHighlighter extends Phobject {
 
   private $config = array();
   private $replaceClass;
diff --git a/src/markup/syntax/highlighter/PhutilInvisibleSyntaxHighlighter.php b/src/markup/syntax/highlighter/PhutilInvisibleSyntaxHighlighter.php
--- a/src/markup/syntax/highlighter/PhutilInvisibleSyntaxHighlighter.php
+++ b/src/markup/syntax/highlighter/PhutilInvisibleSyntaxHighlighter.php
@@ -1,6 +1,6 @@
 <?php
 
-final class PhutilInvisibleSyntaxHighlighter {
+final class PhutilInvisibleSyntaxHighlighter extends Phobject {
 
   private $config = array();
 
diff --git a/src/markup/syntax/highlighter/PhutilPygmentsSyntaxHighlighter.php b/src/markup/syntax/highlighter/PhutilPygmentsSyntaxHighlighter.php
--- a/src/markup/syntax/highlighter/PhutilPygmentsSyntaxHighlighter.php
+++ b/src/markup/syntax/highlighter/PhutilPygmentsSyntaxHighlighter.php
@@ -1,6 +1,6 @@
 <?php
 
-final class PhutilPygmentsSyntaxHighlighter {
+final class PhutilPygmentsSyntaxHighlighter extends Phobject {
 
   private $config = array();
 
diff --git a/src/markup/syntax/highlighter/PhutilRainbowSyntaxHighlighter.php b/src/markup/syntax/highlighter/PhutilRainbowSyntaxHighlighter.php
--- a/src/markup/syntax/highlighter/PhutilRainbowSyntaxHighlighter.php
+++ b/src/markup/syntax/highlighter/PhutilRainbowSyntaxHighlighter.php
@@ -4,7 +4,7 @@
  * Highlights source code with a rainbow of colors, regardless of the language.
  * This highlighter is useless, absurd, and extremely slow.
  */
-final class PhutilRainbowSyntaxHighlighter {
+final class PhutilRainbowSyntaxHighlighter extends Phobject {
 
   private $config = array();
 
diff --git a/src/markup/syntax/highlighter/PhutilSyntaxHighlighter.php b/src/markup/syntax/highlighter/PhutilSyntaxHighlighter.php
--- a/src/markup/syntax/highlighter/PhutilSyntaxHighlighter.php
+++ b/src/markup/syntax/highlighter/PhutilSyntaxHighlighter.php
@@ -1,6 +1,6 @@
 <?php
 
-abstract class PhutilSyntaxHighlighter {
+abstract class PhutilSyntaxHighlighter extends Phobject {
   abstract public function setConfig($key, $value);
   abstract public function getHighlightFuture($source);
 }
diff --git a/src/markup/syntax/highlighter/PhutilXHPASTSyntaxHighlighter.php b/src/markup/syntax/highlighter/PhutilXHPASTSyntaxHighlighter.php
--- a/src/markup/syntax/highlighter/PhutilXHPASTSyntaxHighlighter.php
+++ b/src/markup/syntax/highlighter/PhutilXHPASTSyntaxHighlighter.php
@@ -1,6 +1,6 @@
 <?php
 
-final class PhutilXHPASTSyntaxHighlighter {
+final class PhutilXHPASTSyntaxHighlighter extends Phobject {
 
   public function getHighlightFuture($source) {
     $scrub = false;
diff --git a/src/moduleutils/PhutilLibraryMapBuilder.php b/src/moduleutils/PhutilLibraryMapBuilder.php
--- a/src/moduleutils/PhutilLibraryMapBuilder.php
+++ b/src/moduleutils/PhutilLibraryMapBuilder.php
@@ -9,7 +9,7 @@
  * @task symbol   Symbol Analysis and Caching
  * @task source   Source Management
  */
-final class PhutilLibraryMapBuilder {
+final class PhutilLibraryMapBuilder extends Phobject {
 
   private $root;
   private $quiet = true;
diff --git a/src/parser/PhutilBugtraqParser.php b/src/parser/PhutilBugtraqParser.php
--- a/src/parser/PhutilBugtraqParser.php
+++ b/src/parser/PhutilBugtraqParser.php
@@ -23,7 +23,7 @@
  *   Issues: http://bugs.com/123, http://bugs.com/345
  *
  */
-final class PhutilBugtraqParser {
+final class PhutilBugtraqParser extends Phobject {
 
   private $bugtraqPattern;
   private $bugtraqCaptureExpression;
diff --git a/src/parser/PhutilDocblockParser.php b/src/parser/PhutilDocblockParser.php
--- a/src/parser/PhutilDocblockParser.php
+++ b/src/parser/PhutilDocblockParser.php
@@ -4,7 +4,7 @@
  * Parse a docblock comment from source code into raw text documentation and
  * metadata (like "@author" and "@return").
  */
-final class PhutilDocblockParser {
+final class PhutilDocblockParser extends Phobject {
 
   public function extractDocblocks($text) {
     $blocks = array();
diff --git a/src/parser/PhutilEditorConfig.php b/src/parser/PhutilEditorConfig.php
--- a/src/parser/PhutilEditorConfig.php
+++ b/src/parser/PhutilEditorConfig.php
@@ -3,7 +3,7 @@
 /**
  * Parser for [[http://editorconfig.org/ | EditorConfig]] files.
  */
-final class PhutilEditorConfig {
+final class PhutilEditorConfig extends Phobject {
 
   const CHARSET             = 'charset';
   const END_OF_LINE         = 'end_of_line';
diff --git a/src/parser/PhutilEmailAddress.php b/src/parser/PhutilEmailAddress.php
--- a/src/parser/PhutilEmailAddress.php
+++ b/src/parser/PhutilEmailAddress.php
@@ -6,7 +6,7 @@
  * it should parse all reasonable addresses which are actually in use on the
  * internet today.
  */
-final class PhutilEmailAddress {
+final class PhutilEmailAddress extends Phobject {
 
   private $displayName;
   private $localPart;
diff --git a/src/parser/PhutilGitURI.php b/src/parser/PhutilGitURI.php
--- a/src/parser/PhutilGitURI.php
+++ b/src/parser/PhutilGitURI.php
@@ -14,7 +14,7 @@
  * path is interpreted as relative on the remote, rather than absolute (as with
  * normal URIs).
  */
-final class PhutilGitURI {
+final class PhutilGitURI extends Phobject {
 
   private $user;
   private $domain;
diff --git a/src/parser/PhutilJSON.php b/src/parser/PhutilJSON.php
--- a/src/parser/PhutilJSON.php
+++ b/src/parser/PhutilJSON.php
@@ -6,7 +6,7 @@
  * @task pretty Formatting JSON Objects
  * @task internal Internals
  */
-final class PhutilJSON {
+final class PhutilJSON extends Phobject {
 
 
 /* -(  Formatting JSON Objects  )-------------------------------------------- */
diff --git a/src/parser/PhutilJSONParser.php b/src/parser/PhutilJSONParser.php
--- a/src/parser/PhutilJSONParser.php
+++ b/src/parser/PhutilJSONParser.php
@@ -6,7 +6,7 @@
  * @phutil-external-symbol class JsonLintJsonParser
  * @phutil-external-symbol class JsonLintParsingException
  */
-final class PhutilJSONParser {
+final class PhutilJSONParser extends Phobject {
 
   private $allowDuplicateKeys = false;
 
diff --git a/src/parser/PhutilLanguageGuesser.php b/src/parser/PhutilLanguageGuesser.php
--- a/src/parser/PhutilLanguageGuesser.php
+++ b/src/parser/PhutilLanguageGuesser.php
@@ -4,7 +4,7 @@
  * Very simple class to guess the languages of source files which we failed to
  * determine by examining file name/extension rules.
  */
-final class PhutilLanguageGuesser {
+final class PhutilLanguageGuesser extends Phobject {
 
   /**
    * Guess which computer programming language a file is written in.
diff --git a/src/parser/PhutilParserGenerator.php b/src/parser/PhutilParserGenerator.php
--- a/src/parser/PhutilParserGenerator.php
+++ b/src/parser/PhutilParserGenerator.php
@@ -52,7 +52,7 @@
  * @task tables       Computing Action and Goto Tables
  * @task inspect      Inspecting Generator State
  */
-final class PhutilParserGenerator {
+final class PhutilParserGenerator extends Phobject {
 
   private $terminals;
   private $rules;
diff --git a/src/parser/PhutilQueryStringParser.php b/src/parser/PhutilQueryStringParser.php
--- a/src/parser/PhutilQueryStringParser.php
+++ b/src/parser/PhutilQueryStringParser.php
@@ -24,7 +24,7 @@
  * we'd like to be able to parse all valid query strings without destroying any
  * data, this class implements a less-encumbered parser.
  */
-final class PhutilQueryStringParser {
+final class PhutilQueryStringParser extends Phobject {
 
 
   /**
diff --git a/src/parser/PhutilSimpleOptions.php b/src/parser/PhutilSimpleOptions.php
--- a/src/parser/PhutilSimpleOptions.php
+++ b/src/parser/PhutilSimpleOptions.php
@@ -11,7 +11,7 @@
  * @task config   Parser Configuration
  * @task internal Internals
  */
-final class PhutilSimpleOptions {
+final class PhutilSimpleOptions extends Phobject {
 
   private $caseSensitive;
 
diff --git a/src/parser/PhutilTypeSpec.php b/src/parser/PhutilTypeSpec.php
--- a/src/parser/PhutilTypeSpec.php
+++ b/src/parser/PhutilTypeSpec.php
@@ -39,7 +39,7 @@
  *    string (uppercase)
  *
  */
-final class PhutilTypeSpec {
+final class PhutilTypeSpec extends Phobject {
 
   private $type;
   private $subtypes = array();
diff --git a/src/parser/PhutilURI.php b/src/parser/PhutilURI.php
--- a/src/parser/PhutilURI.php
+++ b/src/parser/PhutilURI.php
@@ -3,7 +3,7 @@
 /**
  * Basic URI parser object.
  */
-final class PhutilURI {
+final class PhutilURI extends Phobject {
 
   private $protocol;
   private $user;
diff --git a/src/parser/aast/api/AASTNode.php b/src/parser/aast/api/AASTNode.php
--- a/src/parser/aast/api/AASTNode.php
+++ b/src/parser/aast/api/AASTNode.php
@@ -1,11 +1,12 @@
 <?php
 
-abstract class AASTNode {
+abstract class AASTNode extends Phobject {
 
   protected $id;
   protected $l;
   protected $r;
   protected $typeID;
+  protected $typeName;
   protected $tree;
 
   // These are public only as a microoptimization to make tree construction
@@ -13,6 +14,8 @@
   public $children = array();
   public $parentNode;
 
+  private $selectCache;
+
   abstract public function isStaticScalar();
   abstract public function getDocblockToken();
   abstract public function evalStatic();
diff --git a/src/parser/aast/api/AASTNodeList.php b/src/parser/aast/api/AASTNodeList.php
--- a/src/parser/aast/api/AASTNodeList.php
+++ b/src/parser/aast/api/AASTNodeList.php
@@ -1,6 +1,8 @@
 <?php
 
-final class AASTNodeList implements Countable, Iterator {
+final class AASTNodeList
+  extends Phobject
+  implements Countable, Iterator {
 
   protected $list;
   protected $tree;
diff --git a/src/parser/aast/api/AASTToken.php b/src/parser/aast/api/AASTToken.php
--- a/src/parser/aast/api/AASTToken.php
+++ b/src/parser/aast/api/AASTToken.php
@@ -1,6 +1,6 @@
 <?php
 
-abstract class AASTToken {
+abstract class AASTToken extends Phobject {
 
   protected $id;
   protected $typeID;
diff --git a/src/parser/aast/api/AASTTree.php b/src/parser/aast/api/AASTTree.php
--- a/src/parser/aast/api/AASTTree.php
+++ b/src/parser/aast/api/AASTTree.php
@@ -3,7 +3,7 @@
 /**
  * An abstract abstract syntax tree.
  */
-abstract class AASTTree {
+abstract class AASTTree extends Phobject {
 
   protected $tree = array();
   protected $stream = array();
diff --git a/src/parser/argument/PhutilArgumentParser.php b/src/parser/argument/PhutilArgumentParser.php
--- a/src/parser/argument/PhutilArgumentParser.php
+++ b/src/parser/argument/PhutilArgumentParser.php
@@ -66,7 +66,7 @@
  * @task help     Command Help
  * @task internal Internals
  */
-final class PhutilArgumentParser {
+final class PhutilArgumentParser extends Phobject {
 
   private $bin;
   private $argv;
diff --git a/src/parser/argument/PhutilArgumentSpecification.php b/src/parser/argument/PhutilArgumentSpecification.php
--- a/src/parser/argument/PhutilArgumentSpecification.php
+++ b/src/parser/argument/PhutilArgumentSpecification.php
@@ -1,6 +1,6 @@
 <?php
 
-final class PhutilArgumentSpecification {
+final class PhutilArgumentSpecification extends Phobject {
 
   private $name;
   private $help;
diff --git a/src/parser/argument/workflow/PhutilArgumentWorkflow.php b/src/parser/argument/workflow/PhutilArgumentWorkflow.php
--- a/src/parser/argument/workflow/PhutilArgumentWorkflow.php
+++ b/src/parser/argument/workflow/PhutilArgumentWorkflow.php
@@ -73,7 +73,7 @@
  *
  * @concrete-extensible
  */
-class PhutilArgumentWorkflow {
+class PhutilArgumentWorkflow extends Phobject {
 
   private $name;
   private $synopsis;
diff --git a/src/parser/xhpast/bin/PhutilXHPASTBinary.php b/src/parser/xhpast/bin/PhutilXHPASTBinary.php
--- a/src/parser/xhpast/bin/PhutilXHPASTBinary.php
+++ b/src/parser/xhpast/bin/PhutilXHPASTBinary.php
@@ -1,6 +1,6 @@
 <?php
 
-final class PhutilXHPASTBinary {
+final class PhutilXHPASTBinary extends Phobject {
 
   /**
    * The expected XHPAST version.
diff --git a/src/phage/agent/PhagePHPAgent.php b/src/phage/agent/PhagePHPAgent.php
--- a/src/phage/agent/PhagePHPAgent.php
+++ b/src/phage/agent/PhagePHPAgent.php
@@ -1,6 +1,6 @@
 <?php
 
-final class PhagePHPAgent {
+final class PhagePHPAgent extends Phobject {
 
   private $stdin;
   private $master;
diff --git a/src/phage/bootloader/PhageAgentBootloader.php b/src/phage/bootloader/PhageAgentBootloader.php
--- a/src/phage/bootloader/PhageAgentBootloader.php
+++ b/src/phage/bootloader/PhageAgentBootloader.php
@@ -1,6 +1,6 @@
 <?php
 
-abstract class PhageAgentBootloader {
+abstract class PhageAgentBootloader extends Phobject {
 
   abstract public function getName();
   abstract public function getBootCommand();
diff --git a/src/phage/util/PhutilBallOfPHP.php b/src/phage/util/PhutilBallOfPHP.php
--- a/src/phage/util/PhutilBallOfPHP.php
+++ b/src/phage/util/PhutilBallOfPHP.php
@@ -4,7 +4,7 @@
  * Concatenates PHP files together into a single stream. Used by Phage to
  * transmit bootloading code.
  */
-final class PhutilBallOfPHP {
+final class PhutilBallOfPHP extends Phobject {
 
   private $parts = array();
 
diff --git a/src/readableserializer/PhutilReadableSerializer.php b/src/readableserializer/PhutilReadableSerializer.php
--- a/src/readableserializer/PhutilReadableSerializer.php
+++ b/src/readableserializer/PhutilReadableSerializer.php
@@ -7,7 +7,7 @@
  * @task print Printing PHP Values
  * @task internal Internals
  */
-final class PhutilReadableSerializer {
+final class PhutilReadableSerializer extends Phobject {
 
 
 /* -(  Printing PHP Values  )------------------------------------------------ */
diff --git a/src/serviceprofiler/PhutilServiceProfiler.php b/src/serviceprofiler/PhutilServiceProfiler.php
--- a/src/serviceprofiler/PhutilServiceProfiler.php
+++ b/src/serviceprofiler/PhutilServiceProfiler.php
@@ -4,7 +4,7 @@
  * Simple event store for service calls, so they can be printed to stdout or
  * displayed in a debug console.
  */
-final class PhutilServiceProfiler {
+final class PhutilServiceProfiler extends Phobject {
 
   private static $instance;
   private $listeners = array();
diff --git a/src/sprites/PhutilSprite.php b/src/sprites/PhutilSprite.php
--- a/src/sprites/PhutilSprite.php
+++ b/src/sprites/PhutilSprite.php
@@ -3,7 +3,7 @@
 /**
  * NOTE: This is very new and unstable.
  */
-final class PhutilSprite {
+final class PhutilSprite extends Phobject {
 
   private $sourceFiles = array();
   private $sourceX;
diff --git a/src/sprites/PhutilSpriteSheet.php b/src/sprites/PhutilSpriteSheet.php
--- a/src/sprites/PhutilSpriteSheet.php
+++ b/src/sprites/PhutilSpriteSheet.php
@@ -3,7 +3,7 @@
 /**
  * NOTE: This is very new and unstable.
  */
-final class PhutilSpriteSheet {
+final class PhutilSpriteSheet extends Phobject {
 
   const MANIFEST_VERSION = 1;
 
diff --git a/src/utils/AbstractDirectedGraph.php b/src/utils/AbstractDirectedGraph.php
--- a/src/utils/AbstractDirectedGraph.php
+++ b/src/utils/AbstractDirectedGraph.php
@@ -28,7 +28,7 @@
  * @task cycle Cycle Detection
  * @task explore Graph Exploration
  */
-abstract class AbstractDirectedGraph {
+abstract class AbstractDirectedGraph extends Phobject {
 
 
   private $knownNodes   = array();
diff --git a/src/utils/PhutilBufferedIterator.php b/src/utils/PhutilBufferedIterator.php
--- a/src/utils/PhutilBufferedIterator.php
+++ b/src/utils/PhutilBufferedIterator.php
@@ -12,7 +12,7 @@
  * @task config   Configuration
  * @task iterator Iterator Implementation
  */
-abstract class PhutilBufferedIterator implements Iterator {
+abstract class PhutilBufferedIterator extends Phobject implements Iterator {
 
   private $data;
   private $pageSize = 100;
diff --git a/src/utils/PhutilChunkedIterator.php b/src/utils/PhutilChunkedIterator.php
--- a/src/utils/PhutilChunkedIterator.php
+++ b/src/utils/PhutilChunkedIterator.php
@@ -1,9 +1,10 @@
 <?php
 
 /**
- * This is an iterator version of array_chunk().
+ * This is an iterator version of `array_chunk()`.
  */
-final class PhutilChunkedIterator implements Iterator {
+final class PhutilChunkedIterator extends Phobject implements Iterator {
+
   private $iterator;
   private $size;
 
diff --git a/src/utils/PhutilEditDistanceMatrix.php b/src/utils/PhutilEditDistanceMatrix.php
--- a/src/utils/PhutilEditDistanceMatrix.php
+++ b/src/utils/PhutilEditDistanceMatrix.php
@@ -45,7 +45,7 @@
  * delete = 1, replace = 1) and computing edit distances for strings of fewer
  * than 1,000 characters, you might set the alter cost to 0.001.
  */
-final class PhutilEditDistanceMatrix {
+final class PhutilEditDistanceMatrix extends Phobject {
 
   private $insertCost    = 1;
   private $deleteCost    = 1;
diff --git a/src/utils/PhutilExecutionEnvironment.php b/src/utils/PhutilExecutionEnvironment.php
--- a/src/utils/PhutilExecutionEnvironment.php
+++ b/src/utils/PhutilExecutionEnvironment.php
@@ -3,7 +3,7 @@
 /**
  * Get information about the current execution environment.
  */
-final class PhutilExecutionEnvironment {
+final class PhutilExecutionEnvironment extends Phobject {
 
   public static function getOSXVersion() {
     if (php_uname('s') != 'Darwin') {
diff --git a/src/utils/PhutilLunarPhase.php b/src/utils/PhutilLunarPhase.php
--- a/src/utils/PhutilLunarPhase.php
+++ b/src/utils/PhutilLunarPhase.php
@@ -6,7 +6,7 @@
  *   $moon = new PhutilLunarPhase(time());
  *   $moon->isFull();
  */
-final class PhutilLunarPhase {
+final class PhutilLunarPhase extends Phobject {
 
   private $epoch;
 
diff --git a/src/utils/__tests__/MFilterTestHelper.php b/src/utils/__tests__/MFilterTestHelper.php
--- a/src/utils/__tests__/MFilterTestHelper.php
+++ b/src/utils/__tests__/MFilterTestHelper.php
@@ -1,6 +1,6 @@
 <?php
 
-final class MFilterTestHelper {
+final class MFilterTestHelper extends Phobject {
 
   private $h;
   private $i;