Refactored code

src/main/java/net/gepafin/tendermanagement/service/impl/CallServiceImpl.java

@@ -92,4 +92,9 @@ public class CallServiceImpl implements CallService {
     public CallEntity validatePublishedCall(Long callId) {
     return   callDao.validatePublishedCall(callId);
     }
+    @Override
+    @Transactional(readOnly = true)
+    public byte[] downloadCallDocumentsAsZip(Long callId) {
+        return callDao.downloadCallDocumentsAsZip(callId);
+    }
     }