9 methods override WidgetInterface::formElement()

EmailDefaultWidget::formElement in drupal/core/modules/field/modules/email/lib/Drupal/email/Plugin/field/widget/EmailDefaultWidget.php: Implements Drupal\field\Plugin\Type\Widget\WidgetInterface::formElement().
FileWidget::formElement in drupal/core/modules/file/lib/Drupal/file/Plugin/field/widget/FileWidget.php: Implements \Drupal\field\Plugin\Type\Widget\WidgetInterface::formElement().
LegacyWidget::formElement in drupal/core/modules/field/lib/Drupal/field/Plugin/field/widget/LegacyWidget.php: Implements Drupal\field\Plugin\Type\Widget\WidgetInterface::formElement().
NumberWidget::formElement in drupal/core/modules/field/modules/number/lib/Drupal/number/Plugin/field/widget/NumberWidget.php: Implements Drupal\field\Plugin\Type\Widget\WidgetInterface::formElement().
TaxonomyAutocompleteWidget::formElement in drupal/core/modules/taxonomy/lib/Drupal/taxonomy/Plugin/field/widget/TaxonomyAutocompleteWidget.php: Implements Drupal\field\Plugin\Type\Widget\WidgetInterface::formElement().
TestFieldWidget::formElement in drupal/core/modules/field/tests/modules/field_test/lib/Drupal/field_test/Plugin/field/widget/TestFieldWidget.php: Implements Drupal\field\Plugin\Type\Widget\WidgetInterface::formElement().
TestFieldWidgetMultiple::formElement in drupal/core/modules/field/tests/modules/field_test/lib/Drupal/field_test/Plugin/field/widget/TestFieldWidgetMultiple.php: Implements Drupal\field\Plugin\Type\Widget\WidgetInterface::formElement().
TextareaWidget::formElement in drupal/core/modules/field/modules/text/lib/Drupal/text/Plugin/field/widget/TextareaWidget.php: Implements Drupal\field\Plugin\Type\Widget\WidgetInterface::formElement().
TextfieldWidget::formElement in drupal/core/modules/field/modules/text/lib/Drupal/text/Plugin/field/widget/TextfieldWidget.php: Implements Drupal\field\Plugin\Type\Widget\WidgetInterface::formElement().