MappingContext creates entity for UUID

[mp911de]

For an entity

class Entity {
    @Id
    @Column("ID")
    private UUID id;
}

the MappingContext creates an entity descriptor that results in an illegal access warning on Java 9 and higher:

WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.springframework.util.ReflectionUtils (file:/home/dav1d/.m2/repository/org/springframework/spring-core/5.2.1.RELEASE/spring-core-5.2.1.RELEASE.jar) to constructor java.util.UUID(byte[])
WARNING: Please consider reporting this to the maintainers of org.springframework.util.ReflectionUtils
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release

See also #283.