The entity type annotations start with some basic information about them, ID, label, and things like that. For example, consider the following Node entity:
* id = "node", * label = @Translation("Content"), * label_singular = @Translation("content item"), * label_plural = @Translation("content items"), * label_count = @PluralTranslation( * singular = "@count content item", * plural = "@count content items" * ),
These are used in various places in the system to properly be able to reference the entity type by machine and human readable names.
