output.contains("intProp.displayName: int 'types.intProp'")
        output.contains("longProp: Long 'types.longProp'")
    }

    def "mismatched types error in managed type are propagated to the user"() {
        when:
        buildScript '''
            @Managed
            interface PrimitiveTypes {
                Long getLongProperty()
                void setLongProperty(long value)
            }

        }

        @Override
        public ValueSnapshot managedImmutableValue(Managed managed) {
            return new ImmutableManagedValueSnapshot(managed.publicType().getName(), (String) managed.unpackState());
        }

        @Override
        public ValueSnapshot managedValue(Managed value, ValueSnapshot state) {
            return new ManagedValueSnapshot(value.publicType().getName(), state);

    }

    private static String toMessage(ModelType<?> managedModelType, String name, ModelType<?> propertyType) {
        return String.format("Invalid managed model type '%s': read only property '%s' has non managed type %s, only managed types can be used", managedModelType, name, propertyType);
    }

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.gradle.model.internal.manage.schema.extract;

import org.gradle.model.Managed;

@Managed
public interface SimpleManagedType {

    String getName();

    void setName(String name);

        'UnmanagedComponent' | 'ManagedBinary'   | 'UnmanagedLanguageSourceSet' | "Unmanaged"
        'UnmanagedComponent' | 'ManagedBinary'   | 'ManagedLanguageSourceSet'   | "Managed"
        'ManagedComponent'   | 'UnmanagedBinary' | 'UnmanagedLanguageSourceSet' | "Unmanaged"
        'ManagedComponent'   | 'UnmanagedBinary' | 'ManagedLanguageSourceSet'   | "Managed"

import org.gradle.model.Managed;
import org.gradle.model.Unmanaged;
import org.gradle.model.internal.manage.schema.CollectionSchema;
import org.gradle.model.internal.manage.schema.ManagedImplSchema;
import org.gradle.model.internal.manage.schema.ModelSchema;
import org.gradle.model.internal.manage.schema.ModelSchemaStore;
import org.gradle.model.internal.manage.schema.RuleSourceSchema;

    private final boolean managed;

    private ModelMapModelProjection(ModelType<?> publicType, ModelType<I> baseItemModelType, boolean managed, ChildNodeInitializerStrategyAccessor<? super I> creatorStrategyAccessor) {
        this.publicType = publicType;
        this.baseItemModelType = baseItemModelType;
        this.managed = managed;
        this.creatorStrategyAccessor = creatorStrategyAccessor;
    }

@Managed interface Item extends Named {}
@Managed interface FileItem extends Item {
    void setSize(int size)
    int getSize()
}
@Managed interface DirectoryItem extends Item {
    ModelMap<Item> getChildren()
}

class PluginRules extends RuleSource {
    @Defaults void setDefaultFileSize(@Each FileItem file) {
        file.size = 1024
    }

    @Rules void applyValidateRules(ValidateRules rules, @Each DirectoryItem directory)  {}
}

The build tree state is managed by the `BuildTreeState` class.
An instance is created at the start of a build execution and discarded at the end of the execution.

### Build state

The "build state" holds the state for a build within the build definition for a single build execution, and is contained by the build tree state.

The build state is managed by the `BuildState` class.

        when:
        buildScript """
            @Managed
            interface Item {
                String getValue()
                void setValue(String value)
            }

            @Managed
            interface A extends Item {
                B getB()
            }

            @Managed
            interface B extends Item {
                C getC()
            }