<2> Reads the value from the project extra property we created — note the `project.` qualifier on `extra[...]`, otherwise Gradle will assume we want to read an extra property from the _task_

// === `Property`, `Provider` and `NamedDomainObjectProvider`


[[kotdsl:assignment]]
== Kotlin lazy property assignment

This is because we read the system property at configuration time, hence requiring Gradle to run the configuration phase again when the value of that property changes.
Fixing that is as simple as obtaining the provider of the system property and wiring it to the task input, without reading it at configuration time.

====

`testLogging` — default: _not set_::
This property represents a set of options that control which test events are logged and at what level. You can also configure other logging behavior via this property. See link:{javadocPath}/org/gradle/api/tasks/testing/logging/TestLoggingContainer.html[TestLoggingContainer] for more detail.

`dryRun` — default: false::

====
include::sample[dir="snippets/files/misc/kotlin/project2",files="build.gradle.kts[tags=using-root-dir-property]"]
include::sample[dir="snippets/files/misc/groovy/project2",files="build.gradle[tags=using-root-dir-property]"]
====

    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]
    }

        isTopLevelProperty = objectExpression.getClass() != PropertyExpression.class;
        objectExpression = transform(objectExpression);
        // we handle the property part as if it were not part of the property
        inPropertyExpression = false;
        Expression property = transform(pe.getProperty());
        isTopLevelProperty = itlp;
        inPropertyExpression = ipe;

        boolean spreadSafe = pe.isSpreadSafe();

    @Test
    void testPluginConfigProperties() throws Exception {
        PomTestWrapper pom = buildPom("plugin-config-properties");
        assertEquals(
                "my.property", pom.getValue("build/plugins[1]/configuration[1]/systemProperties[1]/property[1]/name"));
    }

    /*MNG-3900*/
    @Test
    void testProfilePropertiesInterpolation() throws Exception {

    }

    @Override
    public void setStatus(Object s) {
        getInternalStatus().set(s);
    }

    @Override
    public Property<Object> getInternalStatus() {
        if (status == null) {
            status = getObjects().property(Object.class).convention(DEFAULT_STATUS);
        }
        return status;
    }

    @Override
    public Map<String, Project> getChildProjectsUnchecked() {

Attempting to modify the toolchain after it has been finalized will result in error messages similar to the following:
```
The value for property 'implementation' is final and cannot be changed any further.
The value for property 'languageVersion' is final and cannot be changed any further.
The value for property 'vendor' is final and cannot be changed any further.
```

        private ActivationFrame nextFrame(String property) {
            return new ActivationFrame(property, Optional.empty());
        }

        private <P> ActivationFrame nextFrame(String property, Function<P, InputLocationTracker> child) {
            @SuppressWarnings("unchecked")
            final Optional<P> parent = (Optional<P>) stk.peek().parent;
            return new ActivationFrame(property, parent.map(child));
        }