ModelBinding subjectBinding = binder.getSubjectBinding();
            // Only report subject binding if target state is after node creation
            if (subjectBinding.getPredicate().getState().compareTo(ModelNode.State.Created) > 0) {
                UnboundRuleInput.Builder inputBuilder = toInputBuilder(subjectBinding);
                builder.mutableInput(inputBuilder);
            }

            @Override
            public void execute(ModelBinding modelBinding) {
                ModelNodeInternal node = modelBinding.getNode();
                BindingPredicate predicate = modelBinding.getPredicate();
                if (node.isAtLeast(predicate.getState())) {
                    throw new IllegalStateException(String.format("Cannot add rule %s for model element '%s' at state %s as this element is already at state %s.",

     * the target state, not the input state. Implicitly, a rule accepts as input the subject in the state that is the predecessor of the target state.
     */
    public BindingPredicate getPredicate() {
        return predicate;
    }

    public boolean isBound() {
        return boundTo != null;
    }

    public ModelNodeInternal getNode() {
        if (boundTo == null) {