FieldDefinition

class \Drupal\Core\TypedData\DataDefinition implements \Drupal\Core\TypedData\DataDefinitionInterface, \Drupal\Core\TypedData\ArrayAccess uses \Drupal\Core\TypedData\TypedDataTrait
- class \Drupal\Core\Field\TypedData\FieldItemDataDefinition extends \Drupal\Core\TypedData\DataDefinition implements \Drupal\Core\Field\TypedData\FieldItemDataDefinitionInterface
- class \Drupal\Core\TypedData\ComplexDataDefinitionBase extends \Drupal\Core\TypedData\DataDefinition implements \Drupal\Core\TypedData\ComplexDataDefinitionInterface
- class \Drupal\Core\TypedData\DataReferenceDefinition extends \Drupal\Core\TypedData\DataDefinition implements \Drupal\Core\TypedData\DataReferenceDefinitionInterface
- class \Drupal\Core\TypedData\DataReferenceTargetDefinition extends \Drupal\Core\TypedData\DataDefinition
- class \Drupal\Core\TypedData\ListDataDefinition extends \Drupal\Core\TypedData\DataDefinition implements \Drupal\Core\TypedData\ListDataDefinitionInterface
  - class \Drupal\Core\Config\Schema\SequenceDataDefinition extends \Drupal\Core\TypedData\ListDataDefinition
  - 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\Core\Field\FieldDefinition extends \Drupal\Core\TypedData\ListDataDefinition implements \Drupal\Core\Field\FieldDefinitionInterface uses \Drupal\Core\Cache\UnchangingCacheableDependencyTrait, \Drupal\Core\Field\FieldInputValueNormalizerTrait

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