RequiredFieldStorageDefinitionInterface

class \Drupal\Core\Field\BaseFieldDefinition extends \Drupal\Core\TypedData\ListDataDefinition implements \Drupal\Core\Field\FieldDefinitionInterface, \Drupal\Core\Field\FieldStorageDefinitionInterface, \Drupal\Core\Field\RequiredFieldStorageDefinitionInterface uses \Drupal\Core\Cache\UnchangingCacheableDependencyTrait, \Drupal\Core\Field\FieldInputValueNormalizerTrait
class \Drupal\Tests\migrate\Unit\Plugin\migrate\destination\BaseFieldDefinitionTest extends \Drupal\Core\Field\BaseFieldDefinition
class \Drupal\entity_test\FieldStorageDefinition extends \Drupal\Core\Field\BaseFieldDefinition

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