Rodn fix publication data init

AoU-ResourceServerCommon/src/main/java/ch/unige/aou/business/AouResourceService.java

 package ch.unige.aou.business;
 
+import java.util.Optional;
+
 import org.springframework.beans.factory.annotation.Autowired;
 
 import ch.unige.aou.config.AouProperties;
@@ -22,4 +24,8 @@ public abstract class AouResourceService<T extends Resource<T>> extends Resource
 
   @Autowired
   protected MessageService messageService;
+
+  public Optional<T> findById(String resId) {
+    return this.itemRepository.findById(resId);
+  }
 }