diff --git a/vcell-core/src/main/java/cbit/vcell/export/server/JhdfUtils.java b/vcell-core/src/main/java/cbit/vcell/export/server/JhdfUtils.java
index 5f661fc342..0de0a255dc 100644
--- a/vcell-core/src/main/java/cbit/vcell/export/server/JhdfUtils.java
+++ b/vcell-core/src/main/java/cbit/vcell/export/server/JhdfUtils.java
@@ -10,9 +10,8 @@
 import io.jhdf.api.WritableNode;
 import org.vcell.util.trees.Tree;
 import io.jhdf.object.datatype.CompoundDataType;
-
 import java.util.*;
-import java.util.List;
+
 
 public class JhdfUtils {
     public static Object createMultidimensionalArray(long[] dataDimensions, double[] flattenedDataBuffer) {
@@ -178,6 +177,7 @@ public static void putAttribute(WritableNode node, String name, double[] value)
         node.putAttribute(name, value);
     }
 
+
     public static Map<String, WritableGroup> addGroups(WritableGroup hdf5Group, Tree<String> tree, String ... startingPath){
         Map<String, WritableGroup> pathToGroupMapping = new HashMap<>();
         String pathString = String.join("/", startingPath);