DurationInterface

class \Drupal\Core\TypedData\Plugin\DataType\DurationIso8601 implements \Drupal\Core\TypedData\Type\DurationInterface extends \Drupal\Core\TypedData\Plugin\DataType\StringData
class \Drupal\Core\TypedData\Plugin\DataType\TimeSpan implements \Drupal\Core\TypedData\Type\DurationInterface extends \Drupal\Core\TypedData\Plugin\DataType\IntegerData

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