// `java-gradle-plugin` adds deprecated task `ValidateTaskProperties`
        givenPrecompiledKotlinScript(
            "java-project.gradle.kts",
            """
            plugins { `java-gradle-plugin` }
            """
        ).apply {
            assertNotOutput("'ValidateTaskProperties' is deprecated.")
        }
    }

 * Setters for `classes` and `classpath` on `org.gradle.plugin.devel.tasks.ValidateTaskProperties` (removed)

 * There should not be setters for lazy properties like link:{javadocPath}/org/gradle/api/file/ConfigurableFileCollection.html[`ConfigurableFileCollection`].  Use `setFrom` instead. For example,
----
    validateTaskProperties.getClasses().setFrom(fileCollection)
    validateTaskProperties.getClasspath().setFrom(fileCollection)
----

==== Removal of `ValidateTaskProperties`

The `ValidateTaskProperties` task has been removed and replaced by the link:{javadocPath}/org/gradle/plugin/devel/tasks/ValidatePlugins.html[ValidatePlugins] task.

==== Removal of `ImmutableFileCollection`

=== Potential breaking changes

 * Two overloaded `ValidateTaskProperties.setOutputFile()` methods were removed. They are replaced with auto-generated setters when the task is accessed from a build script, but that won't be the case from plugins and other code outside of the build script.