return proxies.isEmpty() ? null : proxies.get(0);
    }

    @Override
    public List<Proxy> getProxies() {
        return proxies;
    }

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

                // that may lead to unexpected build failure, log them
                if (!modelResult.getProblems().isEmpty()) {
                    List<ModelProblem> problems = modelResult.getProblems();
                    if (logger.isDebugEnabled()) {
                        String problem = (problems.size() == 1) ? "problem" : "problems";

    }

    @Override
    public Settings getEffectiveSettings() {
        return effectiveSettings;
    }

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

     *
     * @return The problems that were encountered during the decryption, can be empty but never {@code null}.
     */
    List<SettingsProblem> getProblems();

    private String source;

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

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

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

    @Override

     *
     * @return The problems that were encountered during the settings building, can be empty but never {@code null}.
     */
    List<SettingsProblem> getProblems();

            if (cause instanceof ModelBuildingException) {
                String message = "In: " + pom + "\n\n";
                for (ModelProblem problem : ((ModelBuildingException) cause).getProblems()) {
                    message += problem + "\n";
                }
                System.out.println(message);
                fail(message);
            }

            throw e;
        }
    }

     *
     * @return the problems that were encountered during the project building, can be empty but never {@code null}
     */
    @Nonnull
    Collection<BuilderProblem> getProblems();

    /**
     * Gets the result of the dependency resolution for the project.
     *
     * @return the result of the dependency resolution for the project
     */
    @Nonnull

        Result<? extends ProjectDependencyGraph> graphResult = buildGraph(session);

        if (graphResult.hasErrors()) {
            return addExceptionToResult(
                    result, graphResult.getProblems().iterator().next().getException());
        }

        try {
            session.setProjectMap(getProjectMap(session.getProjects()));
        } catch (DuplicateProjectException e) {

     * the model builder to fail with a {@link ModelBuildingException}.
     *
     * @return The problems that were encountered during the model building, can be empty but never {@code null}.
     */
    List<ModelProblem> getProblems();