* @param historyDays days number of days to store build history .
 * @param artifactsDays number of days to store artifacts. In the stored history, artifacts older than this number will be cleaned up.
 * @param artifactPatterns patterns for artifacts clean-up. If not specified, all artifacts will be removed.
 */
fun Project.cleanupRule(historyDays: Int, artifactsDays: Int, artifactsPatterns: String? = null) {
    features {

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

const splitPattern = pattern => pattern.split(REGEX_SPLITALL_CRLF)

class IgnoreRule {
    constructor (

            task.dependsOn(extension.getUserManual().getStagedDocumentation());

            task.sources(patternSet -> {
                patternSet.include("**/*.adoc");
                patternSet.exclude("javaProject*Layout.adoc");
                patternSet.exclude("userguide_single.adoc");
                patternSet.exclude("snippets/**/*.adoc");
            });

            // TODO: This breaks the provider

import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class SourceMetaDataVisitor extends VoidVisitorAdapter<ClassMetaDataRepository<ClassMetaData>> {
    private static final Pattern GETTER_METHOD_NAME = Pattern.compile("(get|is)(.+)");
    private static final Pattern SETTER_METHOD_NAME = Pattern.compile("set(.+)");
    private final List<ClassMetaData> allClasses = new ArrayList<ClassMetaData>();

    }

    private static final Pattern UNIX_PID_PATTERN = Pattern.compile("([0-9]+)");
    private static final Pattern WINDOWS_PID_PATTERN = Pattern.compile("([0-9]+)\\s*$");
    private static final String MY_PID = String.valueOf(ProcessHandle.current().pid());
    private static final String JAVA_EXECUTABLE_PATTERN_STR = "java(?:\\.exe)?";
    private static final String GRADLE_MAIN_CLASS_PATTERN_STR = "(org\\.gradle\\.[a-zA-Z]+)";

        <constraint name="__context__" within="" contains="" />...

import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * Converts raw javadoc comments into docbook.
 */
public class JavadocConverter {
    private static final Pattern HEADER_PATTERN = Pattern.compile("h(\\d)", Pattern.CASE_INSENSITIVE);
    private static final Pattern ACCESSOR_COMMENT_PATTERN = Pattern.compile("(?:returns|sets)\\s+(the|whether)\\s+", Pattern.CASE_INSENSITIVE);
    private final Document document;