public interface TaskInterface {
                            Property<String> getSourceCompatibility();
                        }
                    """
                )
                withJsonFile(
                    "resources/upgraded-properties.json",
                    """
                        [{
                            "containingType": "com.example.Task",

    protected
    fun File.withJavaFile(path: String, @Language("java") text: String): File = withFile(path, text)

    protected
    fun File.withJsonFile(path: String, @Language("json") text: String): File = withFile(path, text)

    private
    fun File.withUniqueDirectory(prefixPath: String): File =
        Files.createTempDirectory(