* Build root directories are always watchable hierarchies.
 * Watching the build root directories is better since they are less likely to be deleted and
 * nearly no changes to the watched directories are necessary when running builds on the same project.
 *
 * To allow deleting the build root directories, we need to stop watching a build root directory if there are no more snapshots in the VFS inside,

 * // destination directory. Files matching the preserve
 * // filter will not be deleted.
 * task sync(type: Sync) {
 *     from 'source'
 *     into 'dest'
 *     preserve {
 *         include 'extraDir/**'
 *         include 'dir1/**'
 *         exclude 'dir1/extra.txt'
 *     }
 * }
 * </pre>
 */
@DisableCachingByDefault(because = "Not worth caching")
public abstract class Sync extends AbstractCopyTask {

     */
    public static final JvmVendorSpec ADOPTIUM = matching(KnownJvmVendor.ADOPTIUM);

    public static final JvmVendorSpec ADOPTOPENJDK = matching(KnownJvmVendor.ADOPTOPENJDK);

    public static final JvmVendorSpec AMAZON = matching(KnownJvmVendor.AMAZON);

    public static final JvmVendorSpec APPLE = matching(KnownJvmVendor.APPLE);

    public static final JvmVendorSpec AZUL = matching(KnownJvmVendor.AZUL);

} else if (testToolchain == "matchingVendor") {
// tag::toolchain-matching-vendor[]
java {
    toolchain {
        languageVersion = JavaLanguageVersion.of(11)
        vendor = JvmVendorSpec.matching("customString")
    }
}
// end::toolchain-matching-vendor[]

} else if (testToolchain == "matchingImplementation") {
// tag::toolchain-matching-implementation[]
java {
    toolchain {

type resourceMetricsClient struct {
	client resourceclient.PodMetricsesGetter
}

// GetResourceMetric gets the given resource metric (and an associated oldest timestamp)
// for all pods matching the specified selector in the given namespace

    private static final String ENABLED_MESSAGE = "Watching the file system is configured to be enabled"
    private static final String ENABLED_IF_AVAILABLE_MESSAGE = "Watching the file system is configured to be enabled if available"
    private static final String DISABLED_MESSAGE = "Watching the file system is configured to be disabled"

    private static final String ACTIVE_MESSAGE = "File system watching is active"

        noExceptionThrown()

        when:
        container.matching({ it in container.type }).named("a").configure(method)
        then:
        noExceptionThrown()

        when:
        container.matching({ it in container.type }).named("a", method)
        then:
        noExceptionThrown()

        when:
        container.matching({ it in container.type }).named("a", getType(), method)
        then:

        new DefaultInternalOptions([:]))

    def setup() {
        _ * startParameter.getSystemPropertiesArgs() >> [:]
        _ * buildAction.startParameter >> startParameter
    }

    def "watching virtual file system is informed about watching the file system being #watchMode.description (VFS logging: #vfsLogging, watch logging: #watchLogging)"() {
        _ * startParameter.watchFileSystemMode >> watchMode

} else if (testToolchain == "matchingVendor") {
// tag::toolchain-matching-vendor[]
java {
    toolchain {
        languageVersion = JavaLanguageVersion.of(11)
        vendor = JvmVendorSpec.matching("customString")
    }
}
// end::toolchain-matching-vendor[]

} else if (testToolchain == "matchingImplementation") {
// tag::toolchain-matching-implementation[]
java {
    toolchain {

        buildFile << """
            plugins {
                id('java')
            }
        """
        assumeTrue("File system watching is enabled by default", isCompatibleVersion("7.0"))
    }

    @NoDebug
    @Requires(UnitTestPreconditions.Windows)
    def "disables file system watching on Windows"() {
        when:
        def result = runAssemble()
        then:
        assertFileSystemWatchingDisabled(result)
    }