title: How to instert child entities in JDO (Google App Engine)?
body: <p>How do i add a record to a child entity in the example below ? For example
  i have a Employee Record which is name is "Sam". how do i add 2 street adress for sam ?</p>
  
  <p>Guess i have a</p>
  
  <h2>The Parent entity is Employee</h2>
  
  <pre><code>import java.util.List;
  
  // ...
  @Persistent(mappedBy = "employee")
  private List&lt;ContactInfo&gt; contactInfoSets;
  </code></pre>
  
  <h2>The Child key is Adress</h2>
  
  <pre><code>import com.google.appengine.api.datastore.Key;
  // ... imports ...
  
  @PersistenceCapable
  public class ContactInfo {
      @PrimaryKey
      @Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
      private Key key;
  
      @Persistent
      private String streetAddress;
  
      // ...
  }
  </code></pre>