a generator element is specified for the
 <a href="GeneratedValue.html" title="annotation interface in jakarta.persistence"><code>GeneratedValue</code></a> annotation. A table generator
 may be specified on the entity class or on the primary
 key field or property. The scope of the generator name
 is global to the persistence unit (across all generator
 types).

 <p> If no name is explicitly specified, and the annotation
 occurs on an entity class or primary key attribute of an
 entity class, then the name 