* The capabilities provided by this variant
     *
     * @since 5.3
     */
    List<Capability> getCapabilities();

    /**
     * If present, this means that this variant is a bridge to another variant
     * found in another module. This corresponds to variants which are marked
     * as "available-at" in Gradle Module Metadata.
     *
     * @return the external variant, if any
     * @since 6.8
     */

     * <li>When the client connection disconnects unexpectedly.</li>
     * <li>When the connection is closed using {@link #stop()}.</li>
     * </ul>
     *
     * Note: the end of input may be signalled from another thread before this method returns.
     *
     * @param handler the handler. Use null to remove the current handler.
     */
    void onStdin(@Nullable StdinHandler handler);

    /**

        def address = new MultiChoiceAddress(UUID.randomUUID(), 123, [])

        def outputStream = new ByteArrayOutputStream()
        def printStream = new PrintStream(outputStream)
        printStream.print("""hey joe!
another line of output...
""")

        new DaemonStartupCommunication().printDaemonStarted(printStream, 12, "uid", address, new File("12.log"))
        def output = new String(outputStream.toByteArray())

        when:

import org.gradle.api.GradleException;
import org.gradle.api.Incubating;

/**
 * Signals that a task has failed in a manner which does not prevent consumers of that task's output from running.
 *
 * A task can depend upon another task's outcome (PASS vs. FAIL), outputs (the files they produce) or both. A verification
 * failure represents the case where a task has a failed outcome, but has still produced valid output files for consumption.

var _ MetricsProvider = &cachedMetrics{}

// cachedMetrics represents a MetricsProvider that wraps another provider and
// caches the result.
type cachedMetrics struct {
	wrapped       MetricsProvider
	resultError   error
	resultMetrics *Metrics
	once          cacheOnce
}

// NewCachedMetrics creates a new cachedMetrics wrapping another
// MetricsProvider and caching the results.

                                + "Detected that one of the modules of this multi-module project uses another module as "
                                + "plugin extension which still needed to be built. This is not possible within the same "
                                + "reactor build. Another project collection strategy will be executed as result.",
                        System.lineSeparator());

        problemReporter.reportProblemIfNeeded(logger, InstallationLocation.userDefined(location, "source"), "another message")
        then:
        1 * logger.log(LogLevel.WARN, "message")
        1 * logger.log(LogLevel.WARN, "another message")
    }

    def "reports problems with auto-detected installations at INFO"() {
        when:

# comments

            }
        }.zipTo(zipFile)

        def zipFile2 = file('another-library.jar')
        file('anotherZipContents').create {
            file('thirdFile.txt').text = "third file"
            file('forthFile.txt').text = "forth file"
            subdir {
                file('someEvenOtherFile.log').text = "another file in subdir"
            }
        }.zipTo(zipFile2)

        when:

        e.message == "Timeout waiting for instant 'unknown' to be defined by another thread."

        when:
        async {
            thread.blockUntil.unknown
        }

        then:
        e = thrown()
        e.message == "Timeout waiting for instant 'unknown' to be defined by another thread."

        when:
        start {
            thread.blockUntil.unknown
        }