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Title	Object type	File name	Summary
DerivativeDiscoveryDecoratorTest::$discoveryMain	property	core/tests/Drupal/Tests/Core/Plugin/Discovery/DerivativeDiscoveryDecoratorTest.php	The mock main discovery object.
DerivativeDiscoveryDecoratorTest::setUp	function	core/tests/Drupal/Tests/Core/Plugin/Discovery/DerivativeDiscoveryDecoratorTest.php
DerivativeDiscoveryDecoratorTest::testExistingDerivative	function	core/tests/Drupal/Tests/Core/Plugin/Discovery/DerivativeDiscoveryDecoratorTest.php	Tests derivative definitions when a definition already exists.
DerivativeDiscoveryDecoratorTest::testGetDerivativeFetcher	function	core/tests/Drupal/Tests/Core/Plugin/Discovery/DerivativeDiscoveryDecoratorTest.php	Tests the getDerivativeFetcher method.
DerivativeDiscoveryDecoratorTest::testGetDerivativeFetcherWithAnnotationObjects	function	core/tests/Drupal/Tests/Core/Plugin/Discovery/DerivativeDiscoveryDecoratorTest.php	Tests the getDerivativeFetcher method with objects instead of arrays.
DerivativeDiscoveryDecoratorTest::testGetDeriverClassWithClassedDefinitions	function	core/tests/Drupal/Tests/Core/Plugin/Discovery/DerivativeDiscoveryDecoratorTest.php	Tests getDeriverClass with classed objects instead of arrays.
DerivativeDiscoveryDecoratorTest::testGetDeriverClassWithInvalidClassedDefinitions	function	core/tests/Drupal/Tests/Core/Plugin/Discovery/DerivativeDiscoveryDecoratorTest.php	@covers ::getDeriverClass[[api-linebreak]]
DerivativeDiscoveryDecoratorTest::testInvalidDerivativeFetcher	function	core/tests/Drupal/Tests/Core/Plugin/Discovery/DerivativeDiscoveryDecoratorTest.php	Tests the getDerivativeFetcher method with an invalid class.
DerivativeDiscoveryDecoratorTest::testNonExistentDerivativeFetcher	function	core/tests/Drupal/Tests/Core/Plugin/Discovery/DerivativeDiscoveryDecoratorTest.php	Tests the getDerivativeFetcher method with a non-existent class.
DerivativeDiscoveryDecoratorTest::testSingleExistingDerivative	function	core/tests/Drupal/Tests/Core/Plugin/Discovery/DerivativeDiscoveryDecoratorTest.php	Tests a single definition when a derivative already exists.
DerivativeInspectionInterface	interface	core/lib/Drupal/Component/Plugin/DerivativeInspectionInterface.php	Provides a plugin interface for providing derivative metadata inspection.
DerivativeInspectionInterface.php	file	core/lib/Drupal/Component/Plugin/DerivativeInspectionInterface.php
DerivativeInspectionInterface::getBaseId	function	core/lib/Drupal/Component/Plugin/DerivativeInspectionInterface.php	Gets the base_plugin_id of the plugin instance.
DerivativeInspectionInterface::getDerivativeId	function	core/lib/Drupal/Component/Plugin/DerivativeInspectionInterface.php	Gets the derivative_id of the plugin instance.
DerivativeTest	class	core/tests/Drupal/KernelTests/Core/Plugin/DerivativeTest.php	Tests that derivative plugins are correctly discovered.
DerivativeTest.php	file	core/tests/Drupal/KernelTests/Core/Plugin/DerivativeTest.php
DerivativeTest::$modules	property	core/tests/Drupal/KernelTests/Core/Plugin/DerivativeTest.php	Modules to install.
DerivativeTest::testDerivativeDecorator	function	core/tests/Drupal/KernelTests/Core/Plugin/DerivativeTest.php	Tests getDefinitions() and getDefinition() with a derivativeDecorator.
DerivedToolkit	class	core/modules/system/tests/modules/image_test/src/Plugin/ImageToolkit/DerivedToolkit.php	Provides a derivative of TestToolkit.
DerivedToolkit.php	file	core/modules/system/tests/modules/image_test/src/Plugin/ImageToolkit/DerivedToolkit.php
DeriverBase	class	core/lib/Drupal/Component/Plugin/Derivative/DeriverBase.php	Provides a basic deriver.
DeriverBase.php	file	core/lib/Drupal/Component/Plugin/Derivative/DeriverBase.php
DeriverBase::$derivatives	property	core/lib/Drupal/Component/Plugin/Derivative/DeriverBase.php	List of derivative definitions.
DeriverBase::getDerivativeDefinition	function	core/lib/Drupal/Component/Plugin/Derivative/DeriverBase.php	Gets the definition of a derivative plugin.
DeriverBase::getDerivativeDefinitions	function	core/lib/Drupal/Component/Plugin/Derivative/DeriverBase.php	Gets the definition of all derivatives of a base plugin.
DeriverInterface	interface	core/lib/Drupal/Component/Plugin/Derivative/DeriverInterface.php	Provides additional plugin definitions based on an existing definition.
DeriverInterface.php	file	core/lib/Drupal/Component/Plugin/Derivative/DeriverInterface.php
DeriverInterface::getDerivativeDefinition	function	core/lib/Drupal/Component/Plugin/Derivative/DeriverInterface.php	Gets the definition of a derivative plugin.
DeriverInterface::getDerivativeDefinitions	function	core/lib/Drupal/Component/Plugin/Derivative/DeriverInterface.php	Gets the definition of all derivatives of a base plugin.
Desaturate	class	core/modules/system/src/Plugin/ImageToolkit/Operation/gd/Desaturate.php	Defines GD2 Desaturate operation.
Desaturate.php	file	core/modules/system/src/Plugin/ImageToolkit/Operation/gd/Desaturate.php
Desaturate::arguments	function	core/modules/system/src/Plugin/ImageToolkit/Operation/gd/Desaturate.php	Returns the definition of the operation arguments.
Desaturate::execute	function	core/modules/system/src/Plugin/ImageToolkit/Operation/gd/Desaturate.php	Performs the actual manipulation on the image.
DesaturateImageEffect	class	core/modules/image/src/Plugin/ImageEffect/DesaturateImageEffect.php	Desaturates (grayscale) an image resource.
DesaturateImageEffect.php	file	core/modules/image/src/Plugin/ImageEffect/DesaturateImageEffect.php
DesaturateImageEffect::applyEffect	function	core/modules/image/src/Plugin/ImageEffect/DesaturateImageEffect.php	Applies an image effect to the image object.
DescriptionAwareFileFormatterBase	class	core/modules/file/src/Plugin/Field/FieldFormatter/DescriptionAwareFileFormatterBase.php	Base class for file formatters that have to deal with file descriptions.
DescriptionAwareFileFormatterBase.php	file	core/modules/file/src/Plugin/Field/FieldFormatter/DescriptionAwareFileFormatterBase.php
DescriptionAwareFileFormatterBase::defaultSettings	function	core/modules/file/src/Plugin/Field/FieldFormatter/DescriptionAwareFileFormatterBase.php	Defines the default settings for this plugin.
DescriptionAwareFileFormatterBase::settingsForm	function	core/modules/file/src/Plugin/Field/FieldFormatter/DescriptionAwareFileFormatterBase.php	Returns a form to configure settings for the formatter.
DescriptionAwareFileFormatterBase::settingsSummary	function	core/modules/file/src/Plugin/Field/FieldFormatter/DescriptionAwareFileFormatterBase.php	Returns a short summary for the current formatter settings.
DestinationBase	class	core/modules/migrate/src/Plugin/migrate/destination/DestinationBase.php	Base class for migrate destination classes.
DestinationBase.php	file	core/modules/migrate/src/Plugin/migrate/destination/DestinationBase.php
DestinationBase::$migration	property	core/modules/migrate/src/Plugin/migrate/destination/DestinationBase.php	The migration.
DestinationBase::$rollbackAction	property	core/modules/migrate/src/Plugin/migrate/destination/DestinationBase.php	The rollback action to be saved for the last imported item.
DestinationBase::$supportsRollback	property	core/modules/migrate/src/Plugin/migrate/destination/DestinationBase.php	Indicates whether the destination can be rolled back.
DestinationBase::checkRequirements	function	core/modules/migrate/src/Plugin/migrate/destination/DestinationBase.php	Checks if requirements for this plugin are OK.
DestinationBase::getDestinationModule	function	core/modules/migrate/src/Plugin/migrate/destination/DestinationBase.php	Gets the destination module handling the destination data.
DestinationBase::rollback	function	core/modules/migrate/src/Plugin/migrate/destination/DestinationBase.php	Delete the specified destination object from the target Drupal.
DestinationBase::rollbackAction	function	core/modules/migrate/src/Plugin/migrate/destination/DestinationBase.php	The rollback action for the last imported item.

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