* specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.api;

import org.apache.maven.api.annotations.Config;

/**
 * Configuration constants.
 */
public final class Constants {

    /**
     * Maven home.
     *
     * @since 3.0.0
     */
    @Config(readOnly = true, source = Config.Source.SYSTEM_PROPERTIES)

     * This class contains only static constants and should not be instantiated.
     */
    private Constants() {
        // Utility class - no instantiation
    }

    // ============================================================
    // System and UI Constants
    // ============================================================

    /** System line separator character sequence. */

   *       is used to construct the sample instances. In case of tie, the candidate constructors or
   *       factories are tried one after another until one can be used to construct sample
   *       instances.
   *   <li>For the constructor or static factory method used to construct instances, it's checked
   *       that when equal parameters are passed, the result instance should also be equal; and vice
   *       versa.

   *       is used to construct the sample instances. In case of tie, the candidate constructors or
   *       factories are tried one after another until one can be used to construct sample
   *       instances.
   *   <li>For the constructor or static factory method used to construct instances, it's checked
   *       that when equal parameters are passed, the result instance should also be equal; and vice
   *       versa.

            logger.debug("Initialize {}", this.getClass().getSimpleName());
        }
        load();
    }

    /**
     * Returns a list of available KeyMatch instances.
     *
     * @return A list of KeyMatch instances.
     */
    public List<KeyMatch> getAvailableKeyMatchList() {
        return ComponentUtil.getComponent(KeyMatchBhv.class).selectList(cb -> {
            cb.query().matchAll();

    for (queue in TaskRunner.INSTANCE.activeQueues()) {
      // We wait at most 1 second, so we don't ever turn multiple lost threads into
      // a test timeout failure.
      val waitTime = (entryTime + 1_000_000_000L - System.nanoTime())
      if (!queue.idleLatch().await(waitTime, TimeUnit.NANOSECONDS)) {
        TaskRunner.INSTANCE.withLock {
          TaskRunner.INSTANCE.cancelAll()
        }

                    final DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
                    factory.setFeature(Constants.FEATURE_SECURE_PROCESSING, true);
                    factory.setFeature(Constants.FEATURE_EXTERNAL_GENERAL_ENTITIES, false);
                    factory.setFeature(Constants.FEATURE_EXTERNAL_PARAMETER_ENTITIES, false);

 * used; or if the class exposes a public parameter-less constructor then it will be "new"d and
 * returned.
 *
 * <p>All default instances returned by {@link #get} are generics-safe. Clients won't get type
 * errors for using {@code get(Comparator.class)} as a {@code Comparator<Foo>}, for example.

                    }

                    if (Constants.FALSE.equals(map.get(Constants.INDEXING_TARGET))) {
                        if (logger.isDebugEnabled()) {
                            logger.debug("Skipped. This document is not a index target. ");
                        }
                        continue;
                    }
                    map.remove(Constants.INDEXING_TARGET);

 * used; or if the class exposes a public parameter-less constructor then it will be "new"d and
 * returned.
 *
 * <p>All default instances returned by {@link #get} are generics-safe. Clients won't get type
 * errors for using {@code get(Comparator.class)} as a {@code Comparator<Foo>}, for example.