* shared with the {@code re2j} library. For internal use only. Please refer to the {@code Pattern}
 * javadoc for details.
 */
@GwtCompatible
abstract class CommonPattern {
  public abstract CommonMatcher matcher(CharSequence t);

  public abstract String pattern();

  public abstract int flags();

  // Re-declare this as abstract to force subclasses to override.
  @Override
  public abstract String toString();

      <id>dynamic-property-available</id>
      <activation>
        <property>
          <name>${activationProperty}</name>
        </property>
      </activation>
    </profile>

    <profile>
      <id>matches-another-property</id>
      <activation>
        <property>
          <name>foo</name>
          <value>${bar}</value>
        </property>
      </activation>
    </profile>
  </profiles>

## Eine „aufrufbare“ Instanz { #a-callable-instance }

In Python gibt es eine Möglichkeit, eine Instanz einer Klasse <abbr title="Englisch „callable“">„aufrufbar“</abbr> zu machen.

Nicht die Klasse selbst (die bereits aufrufbar ist), sondern eine Instanz dieser Klasse.

Dazu deklarieren wir eine Methode `__call__`:

{* ../../docs_src/dependencies/tutorial011_an_py39.py hl[12] *}

 *
 * @deprecated Use {@link org.apache.maven.api.Toolchain} instead.
 */
@Deprecated(since = "4.0.0")
public interface ToolchainPrivate extends Toolchain {

    /**
     * Let the toolchain decide if it matches requirements defined
     * in the toolchain plugin configuration.
     * @param requirements Map<String, String> key value pair, may not be {@code null}

        final Matcher matcher = Pattern.compile(tokenPattern).matcher(content);
        if (matcher.find()) {
            if (logger.isDebugEnabled()) {
                logger.debug("Matched: {}", matcher.group());
            }
            if (matcher.groupCount() > 0) {
                return matcher.group(1);
            }
        }
        return null;
    }

     *
     * @param sessionId Session ID
     */
    void init(String sessionId);

    /**
     * Check if a given url is a target.
     *
     * @param url URL
     * @return true if url is matched
     */
    boolean match(String url);

    /**
     * Add an url pattern as a target.
     *
     * @param urlPattern Regular expression that is crawled
     */
    void addInclude(String urlPattern);

            if (hasProjectExpression(s)) {
                String path = pathSupplier.get();
                Matcher matcher = EXPRESSION_PROJECT_NAME_PATTERN.matcher(s);
                while (matcher.find()) {
                    String propertyName = matcher.group(0);

                    if (path.startsWith("activation.file.") && "${project.basedir}".equals(propertyName)) {
                        continue;

            if (versionRangeResult.getHighestVersion() == null) {
                throw new UnresolvableModelException(
                        String.format(
                                "No versions matched the requested parent version range '%s'", parent.getVersion()),
                        parent.getGroupId(),
                        parent.getArtifactId(),
                        parent.getVersion());
            }

        //TODO below checks makes it harder to add new sections
        //because the new section will work correctly only when the section title ends with 'types' :)
        if (title.matches('(?i).* types')) {
            mergeTypes(typeTable, model)
        } else if (title.matches('(?i).* blocks')) {
            mergeBlocks(typeTable, model)
        } else {
            return
        }

        typeTable['@role'] = 'dslTypes'
    }

## Benutzerdefinierte Operation-IDs und bessere Methodennamen { #custom-operation-ids-and-better-method-names }

Sie können die Art und Weise, wie diese Operation-IDs **generiert** werden, **ändern**, um sie einfacher zu machen und **einfachere Methodennamen** in den Clients zu haben.

In diesem Fall müssen Sie auf andere Weise sicherstellen, dass jede Operation-ID **einzigartig** ist.