fun Project.selectStringProperties(vararg propertyNames: String): Map<String, String> =
    propertyNames.mapNotNull { propertyName ->
        stringPropertyOrNull(propertyName)?.let { propertyValue ->
            propertyName to propertyValue
        }
    }.toMap()


/**
 * Creates a [Provider] that returns `true` when this [Provider] has a value

    private
    var closed = false

    fun type(sourceName: String): ApiType? = open {
        apiTypesBySourceName.computeIfAbsent(sourceName) {
            repository.classBytesFor(sourceName)?.let { apiTypeFor(sourceName) { it } }
        }?.invoke()
    }

    internal
    fun allTypes(): Sequence<ApiType> = open {
        repository.allClassesBytesBySourceName().map { (sourceName, classBytes) ->

                else -> {
                }
            }
        }
    }

    private
    fun containsFailedTest(taskPath: String): Boolean {
        return testPathToBinaryResultsDirs[taskPath]?.let { containsFailedTest(it) } == true
    }

    private
    fun addExecutedTaskPath(taskPath: String) {

            }
        }
    }

    private
    fun KtFile.isDocumentedAsSince(version: String, declaringClass: CtClass, field: CtField): Boolean =
        "${declaringClass.baseQualifiedKotlinName}.${field.name}".let { fqn ->
            collectDescendantsOfType<KtProperty>()
                .firstOrNull { it.fqName?.asString() == fqn }
                ?.isDocumentedAsSince(version) == true
        }

    private

fun BuildSteps.gradleWrapper(buildType: BuildType? = null, init: GradleBuildStep.() -> Unit): GradleBuildStep =
    customGradle(init) {
        useGradleWrapper = true
        if (buildFile == null) {
            buildFile = "" // Let Gradle detect the build script
        }
        skipConditionally(buildType)
    }

fun Requirements.requiresOs(os: Os) {
    contains("teamcity.agent.jvm.os.name", os.agentRequirement)
}

        Pair(
            (node as? NodeWithJavadoc<*>)?.javadoc?.orElse(null)?.let { findVersionFromJavadoc(it) }
                // This is needed to find the JavaDoc of a package declaration in 'package-info.java'
                ?: (node as? PackageDeclaration)?.parentNode?.get()?.childNodes?.filterIsInstance<JavadocComment>()?.singleOrNull()?.parse()?.let { findVersionFromJavadoc(it) }
                ?: versionNotFound,

    val name: String
        get() = original.name ?: "p$index"
}


private
fun List<MappedApiFunctionParameter>.groovyNamedArgumentsToVarargs() =
    firstOrNull()?.takeIf { it.type.isGroovyNamedArgumentMap }?.let { first ->
        val mappedMapParameter = first.copy(
            type = ApiTypeUsage(
                sourceName = SourceNames.kotlinArray,
                typeArguments = listOf(
                    ApiTypeUsage(

    //   setting `checkUnignored` to `false` could reduce additional
    //   path matching.

    // @returns {TestResult} true if a file is ignored
    _testOne (path, checkUnignored) {
        let ignored = false
        let unignored = false

        this._rules.forEach(rule => {
            const {negative} = rule
            if (
                unignored === negative && ignored !== unignored