/**
 * Assists the project builder. <strong>Warning:</strong> This is an internal utility class that is only public for
 * technical reasons, it is not part of the public API. In particular, this class can be changed or deleted without
 * prior notice.
 *
 * @since 3.0
 */
public class EnvironmentUtils {

    private static Properties envVars;

    /**

/**
 * Caches project class realms. <strong>Warning:</strong> This is an internal utility interface that is only public for
 * technical reasons, it is not part of the public API. In particular, this interface can be changed or deleted without
 * prior notice.
 *
 */
public interface ProjectRealmCache {

    /**
     * A cache key.
     */
    interface Key {
        // marker interface for cache keys
    }

        if (!keptAccessors.isEmpty()) {
            String formattedLeft = CollectionUtils.join("\n", keptAccessors.keySet());
            throw new RuntimeException("The following accessors were upgraded, but didn't match any removed/changed method:\n\n" + formattedLeft);
        }

        // Find accessors that were removed but shouldn't be
        Map<AccessorKey, ReplacedAccessor> removedAccessors = new HashMap<>(oldAccessorsOfUpgradedProperties);

                } finally {
                    SMailCallbackContext.clearPreparedMessageHookOnThread();
                }
            }
            resultBuf.append("Status of ").append(ping.getClusterName()).append(" is changed to ").append(ping.getClusterStatus())
                    .append('.');
        } else if (status == 0) {
            resultBuf.append(ping.getClusterName()).append(" is alive.");
        } else {

      }
      boolean changed = false;
      Iterator<Map<C, V>> iterator = backingMap.values().iterator();
      while (iterator.hasNext()) {
        Map<C, V> map = iterator.next();
        if (map.keySet().remove(obj)) {
          changed = true;
          if (map.isEmpty()) {
            iterator.remove();
          }
        }
      }
      return changed;
    }

    @Override

     * This will set the state of the future to {@link OldAbstractFuture.Sync#COMPLETED} and invoke
     * the listeners if the state was successfully changed.
     *
     * @param value the value that was the result of the task.
     * @return true if the state was successfully changed.
     */
    @CanIgnoreReturnValue
    protected boolean set(@Nullable V value) {
      boolean result = sync.set(value);
      if (result) {

     * This will set the state of the future to {@link OldAbstractFuture.Sync#COMPLETED} and invoke
     * the listeners if the state was successfully changed.
     *
     * @param value the value that was the result of the task.
     * @return true if the state was successfully changed.
     */
    @CanIgnoreReturnValue
    protected boolean set(@Nullable V value) {
      boolean result = sync.set(value);
      if (result) {

   *
   * @return {@code true} if the multimap changed
   */
  @CanIgnoreReturnValue
  boolean putAll(@ParametricNullness K key, Iterable<? extends V> values);

  /**
   * Stores all key-value pairs of {@code multimap} in this multimap, in the order returned by
   * {@code multimap.entries()}.
   *
   * @return {@code true} if the multimap changed
   */
  @CanIgnoreReturnValue

/**
 * <p>
 * Extension point that allows build extensions observe and possibly veto mojo executions.
 * </p>
 * <strong>Note:</strong> This interface is part of work in progress and can be changed or removed without notice.
 *
 * @see org.apache.maven.execution.scope.WeakMojoExecutionListener
 * @since 3.1.2
 */
public interface MojoExecutionListener {

import org.apache.maven.execution.MavenExecutionResult;

/**
 * Context that is fixed for the entire reactor build.
 *
 * @since 3.0
 *         NOTE: This class is not part of any public api and can be changed or deleted without prior notice.
 */
public class ReactorContext {
    private final MavenExecutionResult result;

    private final ClassLoader originalContextClassLoader;