*            {@code null}.
     * @param problems The container used to collect problems that were encountered, must not be {@code null}.
     * @return The profiles that have been activated, never {@code null}.
     */
    List<Profile> getActiveProfiles(
            Collection<Profile> profiles, ProfileActivationContext context, ModelProblemCollector problems);

            ModelBuildingRequest request,
            ModelProblemCollector problems) {
        Model m = new Model(model);
        injectProfile(m, profile != null ? new Profile(profile) : null, request, problems);
        return m.getDelegate();
    }

    /**
     * Merges values from the specified profile into the given model. Implementations are expected to keep the profile

 * under the License.
 */
package org.apache.maven.model.profile.activation;

import java.util.Properties;

import org.apache.maven.api.model.Profile;
import org.apache.maven.model.building.SimpleProblemCollector;
import org.apache.maven.model.profile.DefaultProfileActivationContext;
import org.apache.maven.model.profile.ProfileActivationContext;
import org.junit.jupiter.api.AfterEach;

    @Test
    void testShouldActivateDefaultProfile() throws Exception {
        Profile notActivated = new Profile();
        notActivated.setId("notActivated");

        Activation nonActivation = new Activation();

        nonActivation.setJdk("19.2");

        notActivated.setActivation(nonActivation);

        Profile defaultActivated = new Profile();
        defaultActivated.setId("defaultActivated");

                problems.messages.get(0),
                "'profiles.profile.id' must be unique but found duplicate profile with id test");
    }

    @Test
    void testValidateUniqueRepositoryId() throws Exception {
        Settings settings = new Settings();
        Profile profile = new Profile();
        profile.setId("pro");
        settings.addProfile(profile);
        Repository repo1 = new Repository();

							<em class="fa fa-arrow-circle-left">
							<la:message key="labels.profile.back" />
						</la:link>
						<button type="submit" name="changePassword"
							class="btn btn-success"
							value="<la:message key="labels.profile.update"/>">
							<em class="fa fa-pencil-alt">
							<la:message key="labels.profile.update" />
						</button>
					</div>
				</la:form>
			</div>
		</div>
	</div>

    }

    /**
     * Mark a profile as required and activated.
     * @param id The identifier of the profile.
     */
    public void activateRequiredProfile(String id) {
        this.activations.put(id, ActivationSettings.ACTIVATION_REQUIRED);
    }

    /**
     * Mark a profile as optional and activated.
     * @param id The identifier of the profile.
     */

      <description><![CDATA[
        This is the file specification used to activate a profile. The missing value will be a the location
        of a file that needs to exist, and if it doesn't the profile must run.  On the other hand exists will test
        for the existence of the file and if it is there will run the profile.
      ]]></description>
      <fields>
        <field>
          <name>missing</name>

        return requestProperties;
    }

    public Map<String, Profile> getProfilesById() {
        return profilesById;
    }

    /* (non-Javadoc)
     * @see org.apache.maven.profiles.ProfileManager#addProfile(org.apache.maven.model.Profile)
     */
    public void addProfile(Profile profile) {
        String profileId = profile.getId();

        Profile existing = profilesById.get(profileId);
        if (existing != null) {

            org.apache.maven.model.Profile profile,
            ModelBuildingRequest request,
            ModelProblemCollector problems) {
        model.update(
                injectProfile(model.getDelegate(), profile != null ? profile.getDelegate() : null, request, problems));
    }

    @Override
    public Model injectProfile(