interface PropertyMetadataContainerInterface

ClassMetadata.php in drupal/core/vendor/symfony/validator/Symfony/Component/Validator/Mapping/ClassMetadata.php

PropertyContainerMetadata.php in drupal/core/lib/Drupal/Core/TypedData/Validation/PropertyContainerMetadata.php

Contains \Drupal\Core\TypedData\Validation\PropertyContainerMetadata.

interface PropertyMetadataContainerInterface {

  /**
   * Check if there's any metadata attached to the given named property.
   *
   * @param string $property The property name.
   *
   * @return Boolean
   */
  public function hasPropertyMetadata($property);

  /**
   * Returns all metadata instances for the given named property.
   *
   * If your implementation does not support properties, simply throw an
   * exception in this method (for example a <tt>BadMethodCallException</tt>).
   *
   * @param string $property The property name.
   *
   * @return PropertyMetadataInterface[] A list of metadata instances. Empty if
   *                                     no metadata exists for the property.
   */
  public function getPropertyMetadata($property);

}