The plugin context handler. Type: \Drupal\Core\Plugin\Context\ContextHandlerInterface File

The context repository service. Type: \Drupal\Core\Plugin\Context\ContextRepositoryInterface File

The ID of the block. Type: string File core/modules

public BlockListBuilder::validateForm(array &$form, FormStateInterface

public AdminDemoNegotiator::applies(RouteMatchInterface

public BlockListBuilder::buildForm(array $form, FormStateInterface

public BlockListBuilder::__construct(EntityTypeInterface $entity_type

protected BlockListBuilder::systemRegionList($theme, $show =

public BlockRepositoryInterface::getVisibleB

Provides a list of block plugins to be added to the layout. Hierarchy class \Drup