@Override
            public String toString() {
                return "configure matching " + spec + " using " + action.getDescriptor();
            }

            @Override
            public void onDiscovered(ModelNodeInternal node) {
                if (node.canBeViewedAs(subjectType) && spec.matches(node)) {
                    bind(ModelReference.of(node.getPath(), subjectType), role, action);
                }
            }