public class MyBridge implements HibernateSearchComplexBridge {
 private FieldDefinition myField1;
 private FieldDefinition myField2;
 private FieldDefinition myField3;
 public void register(FieldRegistry registry, String defaultRelativeName) {
   myField1 = registry.start("name1", Types.SOME_TYPE). ...  .build();
   myField2 = registry.start("name2", Types.SOME_TYPE). ...  .build();
   myField3 = registry.start("name3", Types.SOME_TYPE). ...  .build();
 }
 public void set(org.hibernate.search.Document document) {
   document.set(myField1, someValue);
   document.set(myField2, someValue);
   document.set(myField3, someValue);
 }
}