def "rule method can define a managed model element backed by an interface"() {
        when:
        buildScript '''
            @Managed
            interface Person {
                String getName()
                void setName(String name)
            }

            @Managed
            interface Names {
                String getName()

    static interface OtherThingSpec extends ThingSpec {}
    static @Managed interface ManagedThingSpec extends ThingSpec {}
    static @Managed interface ChildManagedThingSpec extends ManagedThingSpec {}
    static @Managed interface ManagedThingSpecInternal {}
    static @Managed interface ManagedThingSpecInternalExtendingThingSpecInternal extends ThingSpecInternal {}

import org.gradle.internal.state.Managed;
import org.gradle.internal.state.ManagedFactory;
import org.gradle.internal.state.ManagedFactoryRegistry;

import javax.annotation.Nullable;

public class IsolatedImmutableManagedValue extends AbstractIsolatableScalarValue<Managed> {
    private final ManagedFactoryRegistry managedFactoryRegistry;

    }

    def "rule can create a map of abstract class backed managed model elements"() {
        when:
        buildScript '''
            @Managed
            abstract class Thing implements Named {
              abstract String getName()
              abstract void setValue(String value)
              abstract String getValue()
            }

            @Managed
            interface Container {

import org.gradle.model.ModelSet;
import org.gradle.model.internal.manage.schema.CollectionSchema;
import org.gradle.model.internal.manage.schema.ModelSchemaStore;
import org.gradle.model.internal.type.ModelType;

import java.util.List;
import java.util.Set;

/**
 * Thrown when a NodeInitializer can not be found for a given type or when the type is not managed and can not be constructed.
 */

 * limitations under the License.
 */

package org.gradle.model.internal.manage.binding;

import org.gradle.model.internal.type.ModelType;

/**
 * A managed property of a struct type.
 *
 * <p>Managed properties are properties whose values need to be stored in child-nodes. A
 * managed property is detected when the view schemas declaring the struct declare a property with only abstract accessor

	//	rest of object is unchanged
	//		then
	//	revert any changes to timestamps in managed fields
	//		(to prevent spurious ResourceVersion bump)
	//
	// Procecure:
	// Do a quicker check to see if just managed fields modulo timestamps are
	//	unchanged. If so, then do the full, slower check.
	//
	// In most cases which actually update the object, the managed fields modulo
	//	timestamp check will fail, and we will be able to return early.

import org.gradle.api.Action;
import org.gradle.api.Incubating;

import java.util.Set;

/**
 * A set of managed model objects.
 * <p>
 * {@link org.gradle.model.Managed} types may declare managed set properties.
 * Managed sets can only contain managed types.
 * <p>

	managedFields := f.ManagedFields()
	if len(managedFields) != 1 {
		t.Fatalf("Expected new managed fields to have one entry. Got:\n%#v", managedFields)
	}
	if managedFields[0].Manager != expectedManager {
		t.Fatalf("Expected first item to have manager set to: %s. Got: %s", expectedManager, managedFields[0].Manager)
	}

	// Check that managed fields cannot be reset via subresources
	newObj := obj.DeepCopy()

 * It is an error for a {@code @Model} rule to return {@code void} and for the first parameter to be annotated with {@link Path}.
 * It is an error for a {@code @Model} rule to specify a managed type as the return type.

 * <h3>Creating non-managed model elements</h3>
 * <p>
 * If the element is to be of a non-managed type, the method must return the newly created instance.