EntityViewDeriver.php

<?php

namespace Drupal\ctools\Plugin\Deriver;

use Drupal\Core\Plugin\Context\EntityContextDefinition;

/**
 * Provides entity view block definitions for each entity type.
 */
class EntityViewDeriver extends EntityDeriverBase {
    
    /**
     * {@inheritdoc}
     */
    public function getDerivativeDefinitions($base_plugin_definition) {
        foreach ($this->entityTypeManager
            ->getDefinitions() as $entity_type_id => $entity_type) {
            if ($entity_type->hasViewBuilderClass()) {
                $this->derivatives[$entity_type_id] = $base_plugin_definition;
                $this->derivatives[$entity_type_id]['admin_label'] = $this->t('Entity view (@label)', [
                    '@label' => $entity_type->getLabel(),
                ]);
                $this->derivatives[$entity_type_id]['context_definitions'] = [
                    'entity' => new EntityContextDefinition('entity:' . $entity_type_id),
                ];
            }
        }
        return $this->derivatives;
    }

}