public List<Profile> getProfiles() {
        if (profiles == null) {
            profiles = new ArrayList<>();
        }
        return profiles;
    }

    @Override
    public MavenExecutionRequest setProfiles(List<Profile> profiles) {
        if (profiles != null) {
            this.profiles = new ArrayList<>(profiles);
        } else {
            this.profiles = null;
        }

        return this;

        <executions>
          <execution>
            <id>test</id>
          </execution>
        </executions>
      </plugin>
    </plugins>
  </build>

  <profiles>
    <profile>
      <id>default</id>
      <activation>
        <activeByDefault>true</activeByDefault>
      </activation>
      <properties>

    @Override
    public List<String> getActiveProfileIds() {
        return activeProfileIds;
    }

    /**
     * Sets the identifiers of those profiles that should be activated by explicit demand.
     *
     * @param activeProfileIds The identifiers of those profiles to activate, may be {@code null}.
     * @return This context, never {@code null}.
     */

					Tables: []clause.Table{{Name: "users"}},
					Joins: []clause.Join{
						{
							Type:  clause.RightJoin,
							Table: clause.Table{Name: "profiles"},
							ON: clause.Where{
								[]clause.Expression{clause.Eq{clause.Column{Table: "profiles", Name: "email"}, clause.Column{Table: clause.CurrentTable, Name: "email"}}},
							},
						},
					},
				}, clause.From{
					Joins: []clause.Join{
						{

     *
     * @param model The model into which to merge the values defined by the profile, must not be <code>null</code>.
     * @param profiles The (read-only) list of profiles whose values should be injected, must not be <code>null</code>.
     * @param request The model building request that holds further settings, must not be {@code null}.

                .collect(toSet());
    }

    /**
     * Check whether the required profiles were found in any of the projects we're building or the settings.
     * @param session the Maven session.
     * @param profileActivation the requested optional and required profiles.
     */
    private void validateRequiredProfiles(MavenSession session, ProfileActivation profileActivation) {

     */
    @Deprecated
    MavenExecutionRequest addActiveProfiles(List<String> profiles);

    /**
     * @deprecated Since Maven 4: use {@link #getProfileActivation()}.
     */
    @Deprecated
    MavenExecutionRequest setActiveProfiles(List<String> profiles);

    /**
     * @return The list of profiles that the user wants to activate.
     * @deprecated Since Maven 4: use {@link #getProfileActivation()}.

  <artifactId>aid</artifactId>
  <groupId>gid</groupId>
  <version>0.1</version>
  <packaging>pom</packaging>

  <profiles>
    <profile>
      <id>non-unique-id</id>
    </profile>
    <profile>
      <id>non-unique-id</id>
    </profile>
  </profiles>

    <artifactId>test</artifactId>
    <version>0.1-SNAPSHOT</version>
    <packaging>pom</packaging>

    <properties>
        <my.filter.value>hello</my.filter.value>
    </properties>

    <profiles>
        <profile>
            <id>two-conditions</id>
            <activation>
                <file>
                    <exists>simple.xml</exists>
                </file>
                <property>

 * under the License.
 */
package org.apache.maven.profiles.manager;

import javax.inject.Inject;

import java.util.List;
import java.util.Properties;

import org.apache.maven.model.Activation;
import org.apache.maven.model.ActivationProperty;
import org.apache.maven.model.Profile;
import org.apache.maven.profiles.DefaultProfileManager;
import org.apache.maven.profiles.ProfileManager;
import org.codehaus.plexus.PlexusContainer;