ContentEntityFormInterface

class \Drupal\Core\Entity\ContentEntityConfirmFormBase extends \Drupal\Core\Form\ConfirmFormInterface implements \Drupal\Core\Entity\ContentEntityForm
class \Drupal\Core\Entity\ContentEntityDeleteForm uses \Drupal\Core\Entity\EntityDeleteFormTrait implements \Drupal\Core\Entity\ContentEntityConfirmFormBase
class \Drupal\Core\Entity\ContentEntityForm extends \Drupal\Core\Entity\ContentEntityFormInterface implements \Drupal\Core\Entity\EntityForm
class \Drupal\aggregator\FeedForm implements \Drupal\Core\Entity\ContentEntityForm
class \Drupal\aggregator\Form\FeedDeleteForm implements \Drupal\Core\Entity\ContentEntityDeleteForm
class \Drupal\aggregator\Form\FeedItemsDeleteForm implements \Drupal\Core\Entity\ContentEntityConfirmFormBase
class \Drupal\block_content\BlockContentForm implements \Drupal\Core\Entity\ContentEntityForm
class \Drupal\block_content\Form\BlockContentDeleteForm implements \Drupal\Core\Entity\ContentEntityDeleteForm
class \Drupal\book\Form\BookOutlineForm implements \Drupal\Core\Entity\ContentEntityForm
class \Drupal\comment\CommentForm implements \Drupal\Core\Entity\ContentEntityForm
class \Drupal\comment\Form\DeleteForm implements \Drupal\Core\Entity\ContentEntityDeleteForm
class \Drupal\contact\MessageForm implements \Drupal\Core\Entity\ContentEntityForm
class \Drupal\content_entity_example\Form\ContactDeleteForm implements \Drupal\Core\Entity\ContentEntityConfirmFormBase
class \Drupal\content_entity_example\Form\ContactForm implements \Drupal\Core\Entity\ContentEntityForm
class \Drupal\content_translation\Form\ContentTranslationDeleteForm implements \Drupal\Core\Entity\ContentEntityDeleteForm
class \Drupal\entity_test\EntityTestDeleteForm implements \Drupal\Core\Entity\ContentEntityDeleteForm
class \Drupal\entity_test\EntityTestForm implements \Drupal\Core\Entity\ContentEntityForm
class \Drupal\forum\Form\ContainerForm implements \Drupal\forum\Form\ForumForm
class \Drupal\forum\Form\ForumForm implements \Drupal\taxonomy\TermForm
class \Drupal\layout_builder\Form\OverridesEntityForm uses \Drupal\layout_builder\Form\PreviewToggleTrait implements \Drupal\Core\Entity\ContentEntityForm
class \Drupal\media\MediaForm implements \Drupal\Core\Entity\ContentEntityForm
class \Drupal\media_library_test\Form\TestNodeFormOverride implements \Drupal\node\NodeForm
class \Drupal\menu_link_content\Form\MenuLinkContentDeleteForm implements \Drupal\Core\Entity\ContentEntityDeleteForm
class \Drupal\menu_link_content\Form\MenuLinkContentForm implements \Drupal\Core\Entity\ContentEntityForm
class \Drupal\node\Form\NodeDeleteForm implements \Drupal\Core\Entity\ContentEntityDeleteForm
class \Drupal\node\NodeForm implements \Drupal\Core\Entity\ContentEntityForm
class \Drupal\path\PathAliasForm implements \Drupal\Core\Entity\ContentEntityForm
class \Drupal\shortcut\Form\ShortcutDeleteForm implements \Drupal\Core\Entity\ContentEntityDeleteForm
class \Drupal\shortcut\ShortcutForm implements \Drupal\Core\Entity\ContentEntityForm
class \Drupal\taxonomy\Form\TermDeleteForm implements \Drupal\Core\Entity\ContentEntityDeleteForm
class \Drupal\taxonomy\TermForm implements \Drupal\Core\Entity\ContentEntityForm
class \Drupal\user\AccountForm extends \Drupal\Core\Security\TrustedCallbackInterface implements \Drupal\Core\Entity\ContentEntityForm
class \Drupal\user\Form\UserCancelForm implements \Drupal\Core\Entity\ContentEntityConfirmFormBase
class \Drupal\user\ProfileForm implements \Drupal\user\AccountForm
class \Drupal\user\RegisterForm implements \Drupal\user\AccountForm
class \Drupal\workspaces\Form\WorkspaceDeleteForm extends \Drupal\workspaces\Form\WorkspaceFormInterface implements \Drupal\Core\Entity\ContentEntityDeleteForm
class \Drupal\workspaces\Form\WorkspaceForm extends \Drupal\workspaces\Form\WorkspaceFormInterface implements \Drupal\Core\Entity\ContentEntityForm

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