}

    public static <T> DirectNodeInputUsingModelAction<T> of(ModelReference<T> modelReference, ModelRuleDescriptor descriptor, List<? extends ModelReference<?>> inputs,
                                                      TriAction<? super MutableModelNode, ? super T, ? super List<ModelView<?>>> action) {
        return new DirectNodeInputUsingModelAction<T>(modelReference, descriptor, inputs, action);
    }

    public static final List<ModelReference<?>> EMPTY_MODEL_REF_LIST = Collections.emptyList();

    protected final ModelReference<T> subject;
    protected final ModelRuleDescriptor descriptor;
    protected final List<? extends ModelReference<?>> inputs;

    protected AbstractModelAction(ModelReference<T> subject, ModelRuleDescriptor descriptor, ModelReference<?>... inputs) {

            MethodRuleDefinition<R, S> ruleDefinition = getRuleDefinition();
            List<ModelReference<?>> bindings = ruleDefinition.getReferences();
            List<ModelReference<?>> inputs = bindings.subList(1, bindings.size());
            final ModelRuleDescriptor descriptor = ruleDefinition.getDescriptor();

        return action(ModelReference.of(modelPath, inputType, referenceDescription), action);
    }

    public <I> ModelAction action(final ModelReference<I> inputReference, final BiAction<? super T, ? super I> action) {
        return build(Collections.<ModelReference<?>>singletonList(inputReference), new TriAction<MutableModelNode, T, List<ModelView<?>>>() {

    private final Iterable<ModelProjection> projections;

    private AddProjectionsAction(ModelReference<T> subject, ModelRuleDescriptor descriptor, Iterable<ModelProjection> projections) {
        super(subject, descriptor);
        this.projections = projections;
    }

    public static <T> AddProjectionsAction<T> of(ModelReference<T> subject, ModelRuleDescriptor descriptor, ModelProjection... projections) {

    @Override
    public Multimap<ModelActionRole, ModelAction> getActions(ModelReference<?> subject, ModelRuleDescriptor descriptor) {
        return ImmutableSetMultimap.<ModelActionRole, ModelAction>builder()
            .put(ModelActionRole.Discover, DirectNodeInputUsingModelAction.of(subject, descriptor,
                Arrays.<ModelReference<?>>asList(
                    ModelReference.of(ManagedProxyFactory.class),

import org.gradle.model.internal.core.ModelReference;
import org.gradle.model.internal.core.MutableModelNode;
import org.gradle.model.internal.type.ModelType;

import javax.annotation.Nullable;

/**
 * A fixed set of criteria to use to bind a single model element.
 */
public class BindingPredicate extends ModelPredicate {
    private final ModelReference<?> reference;

        void subjectReference(ModelReference<?> reference) {
            subjectReference = new BindingPredicate(reference)
        }

        void subjectReference(Class type) {
            subjectReference(ModelReference.of(ModelType.of(type)))
        }

        void subjectReference(String path, Class type) {
            subjectReference(ModelReference.of(new ModelPath(path), ModelType.of(type)))
        }

        viewState.assertCanMutate();
        ModelRuleDescriptor descriptor = sourceDescriptor.append(operation);
        ModelReference<E> subject = ModelReference.of(filterType);
        modelNode.applyTo(allLinks(elementFilter.withType(filterType)), role, NoInputsModelAction.of(subject, descriptor, configAction));
    }

            private final ModelReference<?> mappedSubject;
            private final List<ModelReference<?>> inputs;
            private final MethodRuleAction action;
            private final Factory<? extends T> factory;