improve formatting

SVN: 27064

datastore_server/source/java/ch/systemsx/cisd/etlserver/registrator/api/v1/impl/DataSet.java

@@ -119,7 +119,7 @@ public class DataSet<T extends DataSetInformation> extends AbstractDataSetImmuta
     {
         if (experiment != null)
         {
-        return experiment;
+            return experiment;
         } else if (sampleOrNull != null)
         {
             return sampleOrNull.getExperiment();