Add comment on beans.xml and ES client setter.

oaipmh-core/src/main/java/info/textgrid/middleware/RecordDelivererDC.java

@@ -101,6 +101,7 @@ public class RecordDelivererDC extends RecordDelivererAbstract {
       changedId = changedId.replace(this.repositoryObjectURIPrefix, "");
     }
 
+    // TODO Must Index and Type be set here? Isn't it already set in beans.xml?
     GetRequestBuilder recordById = 
     		OAI_ESClient
     		.getOaiESClient()