}

    private
    fun withMockForSettings(existing: Pair<String, Any?>? = null, absent: String? = null, action: DynamicDelegatedPropertiesMock.SettingsMock.() -> Unit) {
        mockForSettings(existing, absent).run {
            action()
            verifyTryGetProperty(existing, absent)
        }
    }

    private

// next and stop.
//
// Next returns the next pair in the sequence
// and a boolean indicating whether the pair is valid.
// When the sequence is over, next returns a pair of zero values and false.
// It is valid to call next after reaching the end of the sequence
// or after calling stop. These calls will continue
// to return a pair of zero values and false.
//

    private
    val lock = Any()

    private
    val scopeSpecs = mutableMapOf<ClassLoaderScopeId, ClassLoaderScopeSpec>()

    private
    val loaders = mutableMapOf<ClassLoader, Pair<ClassLoaderScopeSpec, ClassLoaderRole>>()

    override fun afterStart() {
        listenerManager.add(this)
    }

    /**
     * Stops recording [ClassLoaderScopeSpec]s and releases any recorded state.
     */

    private
    const val modelLine = """<script type="text/javascript" src="configuration-cache-report-data.js"></script>"""

    /**
     * Returns the header and footer of the html template as a pair.
     */
    fun load(): Pair<String, String> {
        val template = readHtmlTemplate()
        val headerEnd = template.indexOf(modelLine)
        require(headerEnd > 0) {
            "Invalid configuration cache report template!"

    @Test
    fun `can handle mix of Serializable and plain beans`() {

        val bean = Pair(42, "42")

        verifyRoundtripOf({
            // A plain bean that holds a reference to a serializable object
            // sharing a reference to another plain bean.
            Pair(SerializableWriteObjectBean(bean), bean)
        }) { (decodedSerializable, decodedBean) ->

        'compatible platforms, but one closer'                      | [platform: JavaVersion.JAVA8]                 | [platform: JavaVersion.JAVA6, flavor: 'free'] | [platform: JavaVersion.JAVA7, flavor: 'paid'] | 'bar'

         *
         * @return a pair with the new [State] and the written [File], which will be `null` when there are no diagnostics.
         */
        open fun commitReportTo(
            outputDirectory: File,
            buildDisplayName: String?,
            cacheAction: String,
            requestedTasks: String?,
            totalProblemCount: Int
        ): Pair<State, File?> =
            illegalState()

        }

        @Override
        public void finished(BuildOperationDescriptor buildOperation, OperationFinishEvent finishEvent) {
            queue(Pair.of(buildOperation, finishEvent));
        }

        @Override
        protected void handle(Pair<BuildOperationDescriptor, OperationFinishEvent> message) {
            listenerProvider.get().finished(message.left, message.right);
        }

        @Override

import org.gradle.api.internal.artifacts.ivyservice.resolveengine.result.ComponentSelectionReasonInternal;
import org.gradle.api.internal.artifacts.ivyservice.resolveengine.result.ComponentSelectionReasons;
import org.gradle.internal.Pair;
import org.gradle.internal.component.external.model.DefaultImmutableCapability;
import org.gradle.internal.component.model.ComponentGraphResolveMetadata;
import org.gradle.internal.component.model.ComponentGraphResolveState;

            if (rightValue == null) {
                setDiff.leftOnly.add(leftEntry.getValue());
            } else {
                Pair<T, T> pair = Pair.of(leftEntry.getValue(), rightValue);
                setDiff.common.add(pair);
            }
        }

        for (T rightValue : indexedRight.values()) {
            setDiff.rightOnly.add(rightValue);
        }