}

    private String join(String message1, String message2) {
        String message = "";

        if (message1 != null && !message1.isEmpty()) {
            message = message1.trim();
        }

        if (message2 != null && !message2.isEmpty()) {
            if (message != null && !message.isEmpty()) {
                if (message.endsWith(".") || message.endsWith("!") || message.endsWith(":")) {

        messages.add(message);
    }

    public String toString() {
        return render("");
    }

    public String render(String indentation) {
        if (messages.size() == 0) {
            return indentation + "There were no validation errors.";
        }

        StringBuilder message = new StringBuilder();

        //        if ( messages.size() == 1 )
        //        {

    public LifecycleExecutionException(String message) {
        super(message);
    }

    public LifecycleExecutionException(Throwable cause) {
        super(cause);
    }

    public LifecycleExecutionException(String message, Throwable cause) {
        super(message, cause);
    }

    public LifecycleExecutionException(String message, MavenProject project) {
        super(message);
        this.project = project;
    }

    public ProjectBuildingException(String projectId, String message, Throwable cause) {
        super(createMessage(message, projectId, null), cause);
        this.projectId = projectId;
    }

    /**
     * @param projectId
     * @param message
     * @param pomFile   pom file location
     */
    public ProjectBuildingException(String projectId, String message, File pomFile) {

    public static String getMessage(Exception e) {
        String message = e.getMessage();
        if (e instanceof XMLStreamException xe && xe.getLocation() != null) {
            int idx = message.indexOf("\nMessage: ");
            if (idx >= 0) {
                return message.substring(idx + "\nMessage: ".length());
            }
        }
        return message;
    }

    public StaxLocation(javax.xml.stream.Location location) {

        this.extension = (extension != null && !extension.isEmpty()) ? extension : null;
        this.version = (version != null && !version.isEmpty()) ? version : null;
        this.message = (message != null && !message.isEmpty()) ? message : null;
    }

    @Override
    public String getGroupId() {
        if (groupId != null) {
            return groupId;
        } else {
            return artifact.getGroupId();

        super(mojoExecution.getMojoDescriptor(), project, message);
        this.mojoExecution = mojoExecution;
    }

    public PluginExecutionException(
            MojoExecution mojoExecution, MavenProject project, String message, Throwable cause) {
        super(mojoExecution.getMojoDescriptor(), project, message, cause);
        this.mojoExecution = mojoExecution;
    }

            String message, Artifact artifact, List<ArtifactRepository> remoteRepositories) {
        this(message, artifact, remoteRepositories, null);
    }

    protected AbstractArtifactResolutionException(
            String message, Artifact artifact, List<ArtifactRepository> remoteRepositories, Throwable t) {
        this(
                message,
                artifact.getGroupId(),

    public MavenExecutionException(String message, File pomFile) {
        super(message);
        this.pomFile = pomFile;
    }

    public MavenExecutionException(String message, File pomFile, ProjectBuildingException cause) {
        super(message, cause);
        this.pomFile = pomFile;
    }

    public MavenExecutionException(String message, Throwable cause) {
        super(message, cause);
    }

    private Throwable exception;

    private String message;

    private String reference;

    private List<ExceptionSummary> children;

    public ExceptionSummary(Throwable exception, String message, String reference) {
        this(exception, message, reference, null);
    }

    public ExceptionSummary(Throwable exception, String message, String reference, List<ExceptionSummary> children) {