/**
     * Gets the external profiles that should be considered for model building.
     *
     * @return The external profiles that should be considered for model building, never {@code null}.
     */
    List<Profile> getProfiles();

    /**
     * Sets the external profiles that should be considered for model building.
     *

        if (profiles == null) {
            profiles = new ArrayList<>();
        }

        return profiles;
    }

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

        return this;

        public ModelBuilderRequestBuilder source(ModelSource source) {
            this.source = source;
            return this;
        }

        public ModelBuilderRequestBuilder profiles(List<Profile> profiles) {
            this.profiles = profiles;
            return this;
        }

        public ModelBuilderRequestBuilder activeProfileIds(List<String> activeProfileIds) {
            this.activeProfileIds = activeProfileIds;

     *         not refer to a known model.
     */
    List<Profile> getActivePomProfiles(String modelId);

    /**
     * Gets the external profiles that were active during model building. External profiles are those that were
     * contributed by {@link ModelBuildingRequest#getProfiles()}.
     *

      <snapshots>
        <enabled>false</enabled>
      </snapshots>
    </pluginRepository>
  </pluginRepositories>


  <!-- profiles
   | This is a list of profiles which can be activated in a variety of ways, and which can modify
   | the build process. Profiles provided in the settings.xml are intended to provide local machine-
   | specific paths and repository locations which allow the build to work in the local environment.

    @Nonnull
    Optional<Project> getParent();

    /**
     * Returns all profiles defined in this project.
     * <p>
     * This method returns only the profiles defined directly in the current project's POM
     * and does not include profiles from parent projects.
     *
     * @return a non-null, possibly empty list of profiles defined in this project
     * @see Profile
     * @see #getEffectiveProfiles()
     */

    /**
     * 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.
     *
     * @return The identifiers of those profiles to deactivate, never {@code null}.
     */

                        .filter(container -> container.element != null),
                // Profile dependencies
                root.child(PROFILES).stream()
                        .flatMap(profiles -> profiles.children(PROFILE))
                        .flatMap(profile -> Stream.of(
                                        new DependencyContainer(

            }
        }

        // Check profiles for dependencyManagement
        boolean profileChanges = root.child(PROFILES).stream()
                .flatMap(profiles -> profiles.children(PROFILE))
                .map(profile -> profile.child(DEPENDENCY_MANAGEMENT)
                        .flatMap(dm -> dm.child(DEPENDENCIES))

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

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