public void register(ReadGraph graph, final Listener<Variant> procedure) {
VariableNode node = parameter.first;
public void register(ReadGraph graph, final Listener<Variant> procedure) {
VariableNode node = parameter.first;
try {
Variant newValue = get(parameter);
if (wasRun && ObjectUtils.objectEquals(value, newValue)) {
try {
Variant newValue = get(parameter);
if (wasRun && ObjectUtils.objectEquals(value, newValue)) {