private InterfacePropertyBean mutableProperty;

        public NestedBeanClass(ObjectFactory objectFactory) {
            this.filesBean = objectFactory.newInstance(InterfaceFileCollectionBean.class);
            this.propBean = objectFactory.newInstance(InterfacePropertyBean.class);
            this.mutableProperty = objectFactory.newInstance(InterfacePropertyBean.class);
        }

        @Nested

            return serviceRegistry.get(ProjectLayout.class);
        }

        @Hidden
        @Model
        ObjectFactory objectFactory(ServiceRegistry serviceRegistry) {
            return serviceRegistry.get(ObjectFactory.class);
        }

        @Hidden
        @Model
        NamedEntityInstantiator<Task> taskFactory(ServiceRegistry serviceRegistry) {

import org.gradle.api.artifacts.transform.TransformParameters
import org.gradle.api.file.FileSystemOperations
import org.gradle.api.file.ProjectLayout
import org.gradle.api.internal.AbstractTask
import org.gradle.api.model.ObjectFactory
import org.gradle.api.provider.Property
import org.gradle.api.provider.Provider
import org.gradle.api.provider.ProviderFactory
import org.gradle.api.services.internal.BuildServiceProvider
import org.gradle.api.tasks.Input

    }

    def "can add list properties to container"() {
        containerAllowsExternalProviders()

        given:
        def property = TestUtil.objectFactory().listProperty(type)

        when:
        container.addAllLater(property)
        property.add(a)
        property.addAll([b, c])

        then:
        toList(container) == [a, b, c]

| `project.files(paths)`
| link:{javadocPath}/org/gradle/api/model/ObjectFactory.html#fileCollection--[ObjectFactory.fileCollection()].link:{javadocPath}/org/gradle/api/file/ConfigurableFileCollection.html#from-java.lang.Object...-[from(paths)]

| `project.fileTree(paths)`

Tasks & properties::
 * The following legacy classes and methods related to <<lazy_configuration#lazy_properties,lazy properties>> have been removed — use link:{javadocPath}/org/gradle/api/model/ObjectFactory.html#property-java.lang.Class-[ObjectFactory.property()] to create `Property` instances:
 ** `PropertyState`
 ** `DirectoryVar`
 ** `RegularFileVar`
 ** `ProjectLayout.newDirectoryVar()`
 ** `ProjectLayout.newFileVar()`

import org.gradle.api.initialization.dsl.ScriptHandler;
import org.gradle.api.invocation.Gradle;
import org.gradle.api.logging.Logger;
import org.gradle.api.logging.LoggingManager;
import org.gradle.api.model.ObjectFactory;
import org.gradle.api.plugins.ExtensionAware;
import org.gradle.api.plugins.ExtensionContainer;
import org.gradle.api.plugins.PluginAware;
import org.gradle.api.project.IsolatedProject;

Plugins that are affected by this change should make their classes abstract as well.
Gradle uses runtime class decoration to implement abstract methods as long as the object is instantiated via `ObjectFactory` or some other automatic mechanism (like <<custom_gradle_types.adoc#managed_properties,managed properties>>).
Those methods should never be directly implemented.

==== Wrapper task configuration

Method <org.gradle.language.base.sources.BaseLanguageSourceSet.create(java.lang.Class, java.lang.Class, org.gradle.platform.base.internal.ComponentSpecIdentifier, org.gradle.api.model.ObjectFactory)> has arguments/return type org.gradle.platform.base.internal.ComponentSpecIdentifier that is not Gradle public API or primitive or built-in JDK classes or Kotlin classes in (BaseLanguageSourceSet.java:0)