?: error("No version found for plugin $pluginId")

                TestedVersion(pluginId, latest)
            }

    private
    fun updateProperties(fetchedVersions: List<TestedVersion>) = updateProperties {
        fetchedVersions.forEach { (pluginId, version) ->
            setProperty(pluginId, version)
        }
    }

    private data class TestedVersion(

        )
        return FetchedVersions(latests, nightlyBuildId, nightlyVersion, aapt2Versions, buildToolsVersion)
    }

    private
    fun updateProperties(fetchedVersions: FetchedVersions) =
        updateProperties {
            setProperty("latests", fetchedVersions.latests.joinToString(","))
            setProperty("nightlyBuildId", fetchedVersions.nightlyBuildId)

                (0 until versions.length)
                    .map { idx -> (versions.item(idx) as Element).textContent }
                    .reversed()
            }

    protected
    fun updateProperties(populateProperties: Properties.() -> Unit) =
        PropertiesUtils.store(
            Properties().apply(populateProperties),
            propertiesFile.get().asFile,
            comment.get(),

    @get:Internal
    abstract val compatibilityDocFile: RegularFileProperty

    @TaskAction
    fun action() =
        fetchLatestKotlinVersions().let { latestKotlinVersions ->
            updateProperties {
                setProperty("latests", latestKotlinVersions.joinToString(","))
            }
            updateCompatibilityDoc(
                compatibilityDocFile,
                "Gradle is tested with Kotlin",