12 methods override PluginFormInterface::validateConfigurationForm() in Zircon Profile 8

AggregatorPluginSettingsBase::validateConfigurationForm in core/modules/aggregator/src/Plugin/AggregatorPluginSettingsBase.php

Form validation handler.

BlockBase::validateConfigurationForm in core/lib/Drupal/Core/Block/BlockBase.php

Most block plugins should not override this method. To add validation for a specific block type, override BlockBase::blockValidate().

Broken::validateConfigurationForm in core/lib/Drupal/Core/Entity/Plugin/EntityReferenceSelection/Broken.php

Form validation handler.

ConditionPluginBase::validateConfigurationForm in core/lib/Drupal/Core/Condition/ConditionPluginBase.php

Form validation handler.

ConfigurableActionBase::validateConfigurationForm in core/lib/Drupal/Core/Action/ConfigurableActionBase.php

Form validation handler.

ConfigurableImageEffectBase::validateConfigurationForm in core/modules/image/src/ConfigurableImageEffectBase.php

Form validation handler.

ConfigurableSearchPluginBase::validateConfigurationForm in core/modules/search/src/Plugin/ConfigurableSearchPluginBase.php

Form validation handler.

DefaultSelection::validateConfigurationForm in core/lib/Drupal/Core/Entity/Plugin/EntityReferenceSelection/DefaultSelection.php

Form validation handler.

ImageToolkitBase::validateConfigurationForm in core/lib/Drupal/Core/ImageToolkit/ImageToolkitBase.php

Form validation handler.

MenuLinkDefaultForm::validateConfigurationForm in core/lib/Drupal/Core/Menu/Form/MenuLinkDefaultForm.php

Form validation handler.

VariantBase::validateConfigurationForm in core/lib/Drupal/Core/Display/VariantBase.php

Form validation handler.

ViewsSelection::validateConfigurationForm in core/modules/views/src/Plugin/EntityReferenceSelection/ViewsSelection.php

Form validation handler.