@Cache(expirationSeconds=600)
@Entity(name="Emp")
@Index // or @Unindex sets default for fields in class; if neither specified, default is @Unindex
class Employee {
   @Id long id;
   @Parent Key<Company> employer;

   @Unindex int vacationDays;

   // field value WILL be serialized (eg, with GWT) but will NOT be persisted in the datastore
   @Ignore int notPersistent;

   // field value will NOT be serialized (eg, with GWT) but WILL be persisted in the datastore
   transient int notSerialized;

   // field getting renamed
   @AlsoLoad("boss") Key<Employee> manager;

   String firstName;
   String lastName;

   // we used to store fullName, now we store first and last separately
   public void oldWay(@AlsoLoad("fullName") String fullName) {
       String[] split = fullName.split(" ");
       firstName = split[0];
       lastName = split[1];
   }

   static class Office {
      String building;
      String room;
   }

   // Allows you to query for employess in a building by filtering on "offices.building"
   Office[] offices;

   // Whatever gets put here will be serialized out and back (and cannot be filtered)
   @Serialize Object misc;

   @OnLoad void onLoad() { /* do something after load */ }
   @OnSave void onSave() { /* do something before persisting */ }
}