Issue #2804525 by shashikant_chauhan, joachim: EntityTypeManager should...

/**

 * Manages entity type plugin definitions.

 *

 * Each entity type definition array is set in the entity type's

 * annotation and altered by hook_entity_type_alter().

 * Each entity type definition array is set in the entity type's annotation and

 * altered by hook_entity_type_alter().

 *

 * Do not use hook_entity_type_alter() hook to add information to entity types,

 * unless one of the following is true:

 * - You are filling in default values.

 * - You need to dynamically add information only in certain circumstances.

 * - Your hook needs to run after hook_entity_type_build() implementations.

 * Use hook_entity_type_build() instead in all other cases.

 *

 * @see \Drupal\Core\Entity\Annotation\EntityType

 * @see \Drupal\Core\Entity\EntityInterface

 * @see \Drupal\Core\Entity\EntityTypeInterface

 * @see hook_entity_type_alter()

 * @see hook_entity_type_build()

 */

class EntityTypeManager extends DefaultPluginManager implements EntityTypeManagerInterface, ContainerAwareInterface {