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FormElementInterface

class \Drupal\Core\Datetime\Element\DateElementBase implements \Drupal\Core\Render\Element\FormElementBase
class \Drupal\Core\Datetime\Element\Datelist uses \Drupal\Core\Security\DoTrustedCallbackTrait implements \Drupal\Core\Datetime\Element\DateElementBase
class \Drupal\Core\Datetime\Element\Datetime uses \Drupal\Core\Security\DoTrustedCallbackTrait implements \Drupal\Core\Datetime\Element\DateElementBase
class \Drupal\Core\Entity\Element\EntityAutocomplete implements \Drupal\Core\Render\Element\Textfield
class \Drupal\Core\Render\Element\Button implements \Drupal\Core\Render\Element\FormElementBase
class \Drupal\Core\Render\Element\Checkbox implements \Drupal\Core\Render\Element\FormElementBase
class \Drupal\Core\Render\Element\Checkboxes uses \Drupal\Core\Render\Element\CompositeFormElementTrait implements \Drupal\Core\Render\Element\FormElementBase
class \Drupal\Core\Render\Element\Color implements \Drupal\Core\Render\Element\FormElementBase
class \Drupal\Core\Render\Element\Date implements \Drupal\Core\Render\Element\FormElementBase
class \Drupal\Core\Render\Element\Email implements \Drupal\Core\Render\Element\FormElementBase
class \Drupal\Core\Render\Element\File implements \Drupal\Core\Render\Element\FormElementBase
class \Drupal\Core\Render\Element\FormElement implements \Drupal\Core\Render\Element\FormElementBase
class \Drupal\Core\Render\Element\FormElementBase extends \Drupal\Core\Render\Element\FormElementInterface implements \Drupal\Core\Render\Element\RenderElementBase
class \Drupal\Core\Render\Element\Hidden implements \Drupal\Core\Render\Element\FormElementBase
class \Drupal\Core\Render\Element\ImageButton implements \Drupal\Core\Render\Element\Submit
class \Drupal\Core\Render\Element\Item implements \Drupal\Core\Render\Element\FormElementBase
class \Drupal\Core\Render\Element\LanguageSelect implements \Drupal\Core\Render\Element\FormElementBase
class \Drupal\Core\Render\Element\MachineName implements \Drupal\Core\Render\Element\Textfield
class \Drupal\Core\Render\Element\Number implements \Drupal\Core\Render\Element\FormElementBase
class \Drupal\Core\Render\Element\Password implements \Drupal\Core\Render\Element\FormElementBase
class \Drupal\Core\Render\Element\PasswordConfirm implements \Drupal\Core\Render\Element\FormElementBase
class \Drupal\Core\Render\Element\PathElement implements \Drupal\Core\Render\Element\Textfield
class \Drupal\Core\Render\Element\Radio implements \Drupal\Core\Render\Element\FormElementBase
class \Drupal\Core\Render\Element\Radios uses \Drupal\Core\Render\Element\CompositeFormElementTrait implements \Drupal\Core\Render\Element\FormElementBase
class \Drupal\Core\Render\Element\Range implements \Drupal\Core\Render\Element\Number
class \Drupal\Core\Render\Element\Search implements \Drupal\Core\Render\Element\FormElementBase
class \Drupal\Core\Render\Element\Select implements \Drupal\Core\Render\Element\FormElementBase
class \Drupal\Core\Render\Element\Submit implements \Drupal\Core\Render\Element\Button
class \Drupal\Core\Render\Element\Table implements \Drupal\Core\Render\Element\FormElementBase
class \Drupal\Core\Render\Element\Tableselect implements \Drupal\Core\Render\Element\Table
class \Drupal\Core\Render\Element\Tel implements \Drupal\Core\Render\Element\FormElementBase
class \Drupal\Core\Render\Element\Textarea implements \Drupal\Core\Render\Element\FormElementBase
class \Drupal\Core\Render\Element\Textfield implements \Drupal\Core\Render\Element\FormElementBase
class \Drupal\Core\Render\Element\Token implements \Drupal\Core\Render\Element\Hidden
class \Drupal\Core\Render\Element\Url implements \Drupal\Core\Render\Element\FormElementBase
class \Drupal\Core\Render\Element\Value implements \Drupal\Core\Render\Element\FormElementBase
class \Drupal\Core\Render\Element\Weight implements \Drupal\Core\Render\Element\FormElementBase
class \Drupal\element_info_test\Element\DeprecatedExtendsFormElement implements \Drupal\Core\Render\Element\FormElement
class \Drupal\field_ui\Element\FieldUiTable implements \Drupal\Core\Render\Element\Table
class \Drupal\file\Element\ManagedFile implements \Drupal\Core\Render\Element\FormElementBase
class \Drupal\language\Element\LanguageConfiguration implements \Drupal\Core\Render\Element\FormElementBase

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