TypedConfigInterface

class \Drupal\Core\Config\Schema\ArrayElement extends \Drupal\Core\Config\Schema\Element implements \Drupal\Core\Config\Schema\IteratorAggregate, \Drupal\Core\Config\Schema\TypedConfigInterface, \Drupal\Core\TypedData\ComplexDataInterface
class \Drupal\Core\Config\Schema\Mapping extends \Drupal\Core\Config\Schema\ArrayElement
class \Drupal\Core\Config\Schema\Sequence extends \Drupal\Core\Config\Schema\ArrayElement

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