PluginFormInterface

class \Drupal\Core\Action\ConfigurableActionBase implements \Drupal\Component\Plugin\ConfigurableInterface, \Drupal\Component\Plugin\DependentPluginInterface, \Drupal\Core\Plugin\PluginFormInterface uses \Drupal\Core\Plugin\ConfigurableTrait extends \Drupal\Core\Action\ActionBase
class \Drupal\Core\Action\Plugin\Action\EmailAction implements \Drupal\Core\Plugin\ContainerFactoryPluginInterface extends \Drupal\Core\Action\ConfigurableActionBase
class \Drupal\Core\Action\Plugin\Action\GotoAction implements \Drupal\Core\Plugin\ContainerFactoryPluginInterface extends \Drupal\Core\Action\ConfigurableActionBase
class \Drupal\Core\Action\Plugin\Action\MessageAction implements \Drupal\Core\Plugin\ContainerFactoryPluginInterface extends \Drupal\Core\Action\ConfigurableActionBase
class \Drupal\Core\Block\BlockBase implements \Drupal\Core\Block\BlockPluginInterface, \Drupal\Core\Plugin\PluginWithFormsInterface, \Drupal\Core\Plugin\PreviewAwarePluginInterface, \Drupal\Core\Render\PreviewFallbackInterface, \Drupal\Core\Plugin\ContextAwarePluginInterface uses \Drupal\Core\Block\BlockPluginTrait, \Drupal\Core\Plugin\ContextAwarePluginTrait, \Drupal\Core\Plugin\ContextAwarePluginAssignmentTrait extends \Drupal\Core\Plugin\PluginBase
class \Drupal\Core\Block\Plugin\Block\Broken implements \Drupal\Core\Block\BlockPluginInterface, \Drupal\Core\Plugin\ContainerFactoryPluginInterface uses \Drupal\Core\Block\BlockPluginTrait, \Drupal\Core\Cache\CacheableDependencyTrait extends \Drupal\Core\Plugin\PluginBase
class \Drupal\Core\Block\Plugin\Block\PageTitleBlock implements \Drupal\Core\Block\TitleBlockPluginInterface extends \Drupal\Core\Block\BlockBase
class \Drupal\Core\Condition\ConditionPluginBase implements \Drupal\Core\Condition\ConditionInterface uses \Drupal\Core\Plugin\ContextAwarePluginAssignmentTrait extends \Drupal\Core\Executable\ExecutablePluginBase
class \Drupal\Core\Display\VariantBase implements \Drupal\Core\Display\VariantInterface uses \Drupal\Core\Plugin\PluginDependencyTrait, \Drupal\Core\Cache\RefinableCacheableDependencyTrait extends \Drupal\Core\Plugin\ConfigurablePluginBase
class \Drupal\Core\Entity\EntityReferenceSelection\SelectionPluginBase implements \Drupal\Core\Entity\EntityReferenceSelection\SelectionInterface, \Drupal\Component\Plugin\DependentPluginInterface extends \Drupal\Core\Plugin\ConfigurablePluginBase
class \Drupal\Core\Entity\Plugin\Condition\EntityBundle implements \Drupal\Core\Plugin\ContainerFactoryPluginInterface extends \Drupal\Core\Condition\ConditionPluginBase
class \Drupal\Core\Entity\Plugin\EntityReferenceSelection\Broken extends \Drupal\Core\Entity\EntityReferenceSelection\SelectionPluginBase
class \Drupal\Core\Entity\Plugin\EntityReferenceSelection\DefaultSelection implements \Drupal\Core\Plugin\ContainerFactoryPluginInterface, \Drupal\Core\Entity\EntityReferenceSelection\SelectionWithAutocreateInterface extends \Drupal\Core\Entity\EntityReferenceSelection\SelectionPluginBase
class \Drupal\Core\Entity\Plugin\EntityReferenceSelection\PhpSelection extends \Drupal\Core\Entity\Plugin\EntityReferenceSelection\DefaultSelection
class \Drupal\Core\ImageToolkit\ImageToolkitBase implements \Drupal\Core\ImageToolkit\ImageToolkitInterface, \Drupal\Core\Plugin\ContainerFactoryPluginInterface extends \Drupal\Core\Plugin\PluginBase
class \Drupal\Core\Layout\LayoutDefault implements \Drupal\Core\Layout\LayoutInterface, \Drupal\Core\Plugin\PluginFormInterface, \Drupal\Core\Plugin\PreviewAwarePluginInterface uses \Drupal\Core\Plugin\ContextAwarePluginAssignmentTrait, \Drupal\Core\Plugin\ContextAwarePluginTrait extends \Drupal\Core\Plugin\ConfigurablePluginBase
class \Drupal\Core\Menu\Form\MenuLinkDefaultForm implements \Drupal\Core\Menu\Form\MenuLinkFormInterface, \Drupal\Core\DependencyInjection\ContainerInjectionInterface uses \Drupal\Core\StringTranslation\StringTranslationTrait
class \Drupal\Core\Menu\Plugin\Block\LocalActionsBlock implements \Drupal\Core\Plugin\ContainerFactoryPluginInterface extends \Drupal\Core\Block\BlockBase
class \Drupal\Core\Menu\Plugin\Block\LocalTasksBlock implements \Drupal\Core\Plugin\ContainerFactoryPluginInterface extends \Drupal\Core\Block\BlockBase
class \Drupal\Core\Plugin\PluginFormBase implements \Drupal\Core\Plugin\PluginFormInterface, \Drupal\Component\Plugin\PluginAwareInterface
class \Drupal\Core\Render\Plugin\DisplayVariant\SimplePageVariant implements \Drupal\Core\Display\PageVariantInterface extends \Drupal\Core\Display\VariantBase
class \Drupal\Core\Theme\Icon\IconExtractorBase implements \Drupal\Core\Theme\Icon\IconExtractorInterface, \Drupal\Core\Plugin\PluginWithFormsInterface uses \Drupal\Core\Plugin\PluginWithFormsTrait extends \Drupal\Component\Plugin\PluginBase
class \Drupal\Core\Theme\Icon\IconExtractorWithFinder implements \Drupal\Core\Theme\Icon\IconExtractorWithFinderInterface, \Drupal\Core\Plugin\PluginWithFormsInterface, \Drupal\Core\Plugin\ContainerFactoryPluginInterface uses \Drupal\Core\Plugin\PluginWithFormsTrait extends \Drupal\Core\Theme\Icon\IconExtractorBase
class \Drupal\Core\Theme\Icon\IconPackExtractorForm implements \Drupal\Core\Plugin\PluginFormInterface extends \Drupal\Core\Plugin\PluginFormBase
class \Drupal\Core\Theme\Plugin\IconExtractor\PathExtractor extends \Drupal\Core\Theme\Icon\IconExtractorWithFinder
class \Drupal\Core\Theme\Plugin\IconExtractor\SvgExtractor extends \Drupal\Core\Theme\Icon\IconExtractorWithFinder
class \Drupal\Core\Theme\Plugin\IconExtractor\SvgSpriteExtractor extends \Drupal\Core\Theme\Icon\IconExtractorWithFinder
class \Drupal\Tests\Core\Plugin\TestClass implements \Drupal\Core\Plugin\PluginWithFormsInterface, \Drupal\Core\Plugin\PluginFormInterface uses \Drupal\Core\Plugin\PluginWithFormsTrait extends \Drupal\Component\Plugin\PluginBase
class \Drupal\Tests\Core\Plugin\TestPluginForm implements \Drupal\Core\Plugin\PluginFormInterface
class \Drupal\taxonomy\Plugin\EntityReferenceSelection\TermSelection extends \Drupal\Core\Entity\Plugin\EntityReferenceSelection\DefaultSelection
class \Drupal\user\Plugin\Action\AddRoleUser extends \Drupal\user\Plugin\Action\ChangeUserRoleBase
class \Drupal\user\Plugin\Action\ChangeUserRoleBase implements \Drupal\Core\Plugin\ContainerFactoryPluginInterface uses \Drupal\Core\Entity\DependencyTrait extends \Drupal\Core\Action\ConfigurableActionBase
class \Drupal\user\Plugin\Action\RemoveRoleUser extends \Drupal\user\Plugin\Action\ChangeUserRoleBase
class \Drupal\user\Plugin\Block\UserLoginBlock implements \Drupal\Core\Plugin\ContainerFactoryPluginInterface, \Drupal\Core\Security\TrustedCallbackInterface uses \Drupal\Core\Routing\RedirectDestinationTrait extends \Drupal\Core\Block\BlockBase
class \Drupal\user\Plugin\Condition\UserRole extends \Drupal\Core\Condition\ConditionPluginBase
class \Drupal\user\Plugin\EntityReferenceSelection\UserSelection extends \Drupal\Core\Entity\Plugin\EntityReferenceSelection\DefaultSelection
class \Drupal\workspaces\Plugin\Block\WorkspaceSwitcherBlock implements \Drupal\Core\Plugin\ContainerFactoryPluginInterface extends \Drupal\Core\Block\BlockBase
class \Drupal\workspaces_ui\Plugin\Block\WorkspaceSwitcherBlock implements \Drupal\Core\Plugin\ContainerFactoryPluginInterface extends \Drupal\Core\Block\BlockBase

Buggy or inaccurate documentation? Please file an issue. Need support? Need help programming? Connect with the Drupal community.