title: Where are persistence units in gs-accessing-data-jpa sample?
body: <p>Here is an example of accessing Data with Spring JPA: <a href="http://spring.io/guides/gs/accessing-data-jpa/" rel="nofollow">http://spring.io/guides/gs/accessing-data-jpa/</a></p>
  
  <p>Where are any persistence units and/or persistence.xml files there? </p>