}

    private void addUtilityTasks(TaskContainer tasks, GradleDocumentationExtension extension) {
        tasks.register("serveDocs", ServeDocs.class, task -> {
            task.setDescription("Runs a local webserver to serve generated documentation.");
            task.setGroup("documentation");

            int webserverPort = 8000;
            task.getJavaLauncher().set(

import org.gradle.work.DisableCachingByDefault;

import javax.inject.Inject;
import java.util.Arrays;

/**
 * Serves the given directory with a simple HTTP server.
 */
@DisableCachingByDefault(because = "This task starts a HTTP server and should not be cached.")
public abstract class ServeDocs extends DefaultTask {
    @InputFiles
    @PathSensitive(PathSensitivity.RELATIVE)

    val samplesCheck = "org.gradle.exemplar:samples-check"
    val snappy = "org.iq80.snappy:snappy"
    val servletApi = "javax.servlet:javax.servlet-api"
    val socksProxy = "com.github.bbottema:java-socks-proxy-server"
    val spock = "org.spockframework:spock-core"
    val spockJUnit4 = "org.spockframework:spock-junit4"
    val sshdCore = "org.apache.sshd:sshd-core"
    val sshdOsgi = "org.apache.sshd:sshd-osgi"

    params {
        param("env.BOT_TEAMCITY_GITHUB_TOKEN", "%github.bot-teamcity.token%")
        param("env.GRADLE_CACHE_REMOTE_SERVER", "%gradle.cache.remote.server%")

        param("env.JAVA_HOME", javaHome(buildJvm, os, arch))
        param("env.GRADLE_OPTS", "-Xmx1536m")
        param("env.ANDROID_HOME", os.androidHome)

const isString = subject => typeof subject === 'string'

// > A blank line matches no files, so it can serve as a separator for readability.
const checkPattern = pattern => pattern
    && isString(pattern)
    && !REGEX_TEST_BLANK_LINE.test(pattern)
    && !REGEX_INVALID_TRAILING_BACKSLASH.test(pattern)

    // > A line starting with # serves as a comment.
    && pattern.indexOf('#') !== 0

    private static final String JAVA_EXECUTABLE_PATTERN_STR = "java(?:\\.exe)?";
    private static final String GRADLE_MAIN_CLASS_PATTERN_STR = "(org\\.gradle\\.[a-zA-Z]+)";
    private static final String PLAY_SERVER_PATTERN_STR = "(play\\.core\\.server\\.NettyServer)";
    private static final String JAVA_PROCESS_STACK_TRACES_MONITOR_PATTERN_STR = "(JavaProcessStackTracesMonitor\\.java)";
    private static ExecutionMode executionMode;