Update javadoc and remove unused variable.

Closes: #3334

spring-data-jpa/src/main/java/org/springframework/data/jpa/repository/support/EntityGraphFactory.java

@@ -40,6 +40,7 @@ abstract class EntityGraphFactory {
 	/**
 	 * Create an {@link EntityGraph} from a collection of properties.
 	 *
+	 * @param entityManager
 	 * @param domainType
 	 * @param properties
 	 */

spring-data-jpa/src/main/java/org/springframework/data/jpa/util/JpaMetamodel.java

@@ -44,8 +44,6 @@ import org.springframework.util.Assert;
 public class JpaMetamodel {
 
 	private static final Map<Metamodel, JpaMetamodel> CACHE = new ConcurrentHashMap<>(4);
-	private static final Set<PersistenceType> ENTITY_OR_MAPPED_SUPERCLASS = EnumSet.of(PersistenceType.ENTITY,
-			PersistenceType.MAPPED_SUPERCLASS);
 
 	private final Metamodel metamodel;
 

spring-data-jpa/src/test/java/org/springframework/data/jpa/repository/custom/CustomGenericJpaRepository.java

@@ -31,7 +31,7 @@ public class CustomGenericJpaRepository<T, ID extends Serializable> extends Simp
 		CustomGenericRepository<T, ID> {
 
 	/**
-	 * @param domainClass
+	 * @param metadata
 	 * @param entityManager
 	 */
 	public CustomGenericJpaRepository(JpaEntityInformation<T, ID> metadata, EntityManager entityManager) {