private static final String QUERY_PARSER = "queryParser";

    private static final String DOCUMENT_HELPER = "documentHelper";

    private static final String ACTIVITY_HELPER = "activityHelper";

    private static final String LDAP_MANAGER = "ldapManager";

    private static final String ROLE_QUERY_HELPER = "roleQueryHelper";

     * already have to deal with, thanks to DI frameworks that perform field and method injection,
     * frameworks like Android that define post-construct hooks like Activity.onCreate, etc.
     */

    @CheckForNull private ValueSetLink<K, V> predecessorInValueSet;
    @CheckForNull private ValueSetLink<K, V> successorInValueSet;

     */
    String PROPERTY_NAME_PACKAGING = "packaging";

    /**
     * Gets the identifiers of those profiles that should be activated by explicit demand.
     *
     * @return The identifiers of those profiles to activate, never {@code null}.
     */
    List<String> getActiveProfileIds();

    /**
     * Gets the identifiers of those profiles that should be deactivated by explicit demand.
     *

        if (name == null || name.isEmpty()) {
            problems.add(
                    BuilderProblem.Severity.ERROR,
                    ModelProblem.Version.BASE,
                    "The property name is required to activate the profile " + profile.getId(),
                    property.getLocation(""));
            return false;
        }

        String sysValue = context.getUserProperties().get(name);
        if (sysValue == null) {

import java.util.Map;
import java.util.Set;
import java.util.function.Predicate;

import static java.util.stream.Collectors.toSet;

/**
 * Container for storing the request from the user to activate or de-activate certain profiles and optionally fail the
 * build if those profiles do not exist.
 */
public class ProfileActivation {
    private final Map<String, ActivationSettings> activations = new HashMap<>();

    /**

    bus.post(EVENT);

    List<String> events = catcher.getEvents();
    assertTrue("No events should be delivered synchronously.", events.isEmpty());

    // Now we find the task in our Executor and explicitly activate it.
    List<Runnable> tasks = executor.getTasks();
    assertEquals("One event dispatch task should be queued.", 1, tasks.size());

    tasks.get(0).run();

            boolean reverseName = false;

            if (name == null) {
                throw new ProfileActivationException(
                        "The property name is required to activate the profile '" + profile.getId() + "'");
            }

            if (name.startsWith("!")) {
                reverseName = true;
                name = name.substring(1);
            }

             * The NbtAddress object used to query this node will be in the list
             * returned by the Node Status. A new NbtAddress object should not be
             * created for it because the original is potentially being actively
             * referenced by other objects. We must populate the existing object's
             * data explicitly (and carefully).
             */
            if ( !addrFound && this.queryAddress.hostName.hexCode == hexCode

    bus.post(EVENT);

    List<String> events = catcher.getEvents();
    assertTrue("No events should be delivered synchronously.", events.isEmpty());

    // Now we find the task in our Executor and explicitly activate it.
    List<Runnable> tasks = executor.getTasks();
    assertEquals("One event dispatch task should be queued.", 1, tasks.size());

    tasks.get(0).run();

        // do nothing
    }

    /**
     * Invoked after MavenSession instance has been created.
     *
     * This callback is intended to allow extensions to inject execution properties,
     * activate profiles and perform similar tasks that affect MavenProject
     * instance construction.
     *
     * @param session the Maven session
     * @throws MavenExecutionException in case of issue
     */