} else if ( nodes[i] instanceof MilestoneNode ) {
MilestoneNode milestone = (MilestoneNode) nodes[i];
builder.append( createMilestoneRule( process,
milestone ) );
} else if ( nodes[i] instanceof StartNode ) {
StartNode startNode = (StartNode) nodes[i];
List<Trigger> triggers = startNode.getTriggers();
if ( triggers != null ) {
for ( Trigger trigger : triggers ) {
if ( trigger instanceof ConstraintTrigger ) {
builder.append( createStartConstraintRule( process,
(ConstraintTrigger) trigger ) );