+ public List<SpecimenOrObservationBase> getRootElements() {
+ List<SpecimenOrObservationBase> elements = new ArrayList<SpecimenOrObservationBase>();
+
+ if(rootNodes != null) {
+ for(TreeNode node : rootNodes) {
+ elements.add((SpecimenOrObservationBase)node.getValue());
+ }
+ }
+ return elements;
+ }
+