public List<PartnerLinkToMap> getPartnerLinksToMap() {
   BpelObject vars = getFirstChild(ElementsToMap.class);
   if (vars == null) return Collections.emptyList();
   return vars.getChildren(PartnerLinkToMap.class);
 }
 public List<CorrelationSetToMap> getCorrelationSetsToMap() {
   BpelObject vars = getFirstChild(ElementsToMap.class);
   if (vars == null) return Collections.emptyList();
   return vars.getChildren(CorrelationSetToMap.class);
 }
 public List<VariableToMap> getVariablesToMap() {
   BpelObject vars = getFirstChild(ElementsToMap.class);
   if (vars == null) return Collections.emptyList();
   return vars.getChildren(VariableToMap.class);
 }