DefaultProblemCollector collector = new DefaultProblemCollector(null);

        collector.add(null, "PROBLEM1", -1, -1, null);

        collector.setSource("SOURCE_PROBLEM2");
        collector.add(null, "PROBLEM2", -1, -1, null);

        collector.setSource("SOURCE_PROBLEM3");
        collector.add(null, "PROBLEM3", -1, -1, null);

        assertEquals("", collector.getProblems().get(0).getSource());

            InputLocation location,
            Exception exception);

    void add(ModelProblem problem);

    ModelBuilderException newModelBuilderException();

    void setSource(String location);

    void setSource(Model model);

    String getSource();

    void setRootModel(Model model);

    Model getRootModel();

        this.setComponents(clone(original.getMojos(), this));
        this.setId(original.getId());
        this.setIsolatedRealm(original.isIsolatedRealm());
        this.setSource(original.getSource());
        this.setDependencies(original.getDependencies());
        this.setDependencyNode(original.getDependencyNode());
    }

                e.getMessage());
    }

    @Test
    void testUnknownPosition() {
        ProblemCollector problemCollector = ProblemCollectorFactory.newInstance(null);
        problemCollector.setSource("SOURCE");
        problemCollector.add(Problem.Severity.ERROR, "MESSAGE", -1, -1, new Exception());
        ToolchainsBuildingException e = new ToolchainsBuildingException(problemCollector.getProblems());
        assertEquals(

     * their source, but the next messages will use the new source.
     *
     * @param source a source
     */
    void setSource(String source);

    /**
     *
     * @return the collected Problems, never {@code null}
     */
    List<Problem> getProblems();

        profileActivationContext.setProjectProperties(inputModel.getDelegate().getProperties());
        problems.setSource(inputModel);
        List<Profile> activePomProfiles =
                profileSelector.getActiveProfiles(inputModel.getProfiles(), profileActivationContext, problems);

        // model normalization
        problems.setSource(inputModel);

    }

    @Override
    public List<ModelProblem> getProblems() {
        return problems;
    }

    public void setSource(String source) {
        this.source = source;
        this.sourceModel = null;
    }

    public void setSource(Model source) {
        this.sourceModel = source;
        this.source = null;

        if (rootModel == null) {
            rootModel = source;

        this.problems = (problems != null) ? problems : new ArrayList<>();
    }

    public List<SettingsProblem> getProblems() {
        return problems;
    }

    public void setSource(String source) {
        this.source = source;
    }

    @Override
    public void add(SettingsProblem.Severity severity, String message, int line, int column, Exception cause) {

        this.problems = (problems != null) ? problems : new ArrayList<>();
    }

    @Override
    public List<Problem> getProblems() {
        return problems;
    }

    @Override
    public void setSource(String source) {
        this.source = source;
    }

    @Override
    public void add(Problem.Severity severity, String message, int line, int column, Exception cause) {

    public static Profile convertFromProfileXmlProfile(org.apache.maven.profiles.Profile profileXmlProfile) {
        Profile profile = new Profile();

        profile.setId(profileXmlProfile.getId());

        profile.setSource("profiles.xml");

        org.apache.maven.profiles.Activation profileActivation = profileXmlProfile.getActivation();

        if (profileActivation != null) {
            Activation activation = new Activation();