/**
 * Constructs a tree of diagnostic messages.
 */
public class TreeFormatter implements DiagnosticsVisitor {
    private final StringBuilder buffer = new StringBuilder();
    private final AbstractStyledTextOutput original;
    private Node current;
    private Prefixer prefixer = new DefaultPrefixer();

    public TreeFormatter() {
        this.original = new AbstractStyledTextOutput() {
            @Override

        AttributeDescriber describer = AttributeDescriberSelector.selectDescriber(failure.getRequestedAttributes(), schema);
        TreeFormatter formatter = new TreeFormatter();
        Map<String, ResolutionCandidateAssessor.AssessedCandidate> ambiguousVariants = summarizeAmbiguousVariants(failure, describer, formatter, true);

    @Override
    public void vetoParameters(ClassGenerator.GeneratedConstructor<?> constructor, Object[] parameters) {
        for (Object param : parameters) {
            if (param == null) {
                TreeFormatter formatter = new TreeFormatter();
                formatter.node("Null value provided in parameters ");
                formatter.appendValues(parameters);
                throw new IllegalArgumentException(formatter.toString());

    }

    private String buildNoMatchingGraphVariantSelectionFailureMsg(StyledAttributeDescriber describer, IncompatibleGraphVariantFailure failure, FailureSubType failureSubType) {
        TreeFormatter formatter = new TreeFormatter();
        String targetVariantText = style(StyledTextOutput.Style.Info, failure.getRequestedName());
        if (failure.getRequestedAttributes().isEmpty()) {

    }

    public static String renderMinimalInformationAbout(Problem problem, boolean renderDocLink, boolean renderSolutions) {
        TreeFormatter formatter = new TreeFormatter();
        formatter.node(endLineWithDot(Optional.ofNullable(problem.getContextualLabel()).orElseGet(() -> problem.getDefinition().getId().getDisplayName())));

     * @return the display name
     */
    String getDisplayName();

    /**
     * Appends diagnostic information about the contents of this collection to the given formatter.
     */
    TreeFormatter describeContents(TreeFormatter formatter);

    /**
     * Calculates the execution time value of this file collection. The resulting value is serialized to the configuration cache

    }

    public Collection<Conflict> getConflicts() {
        return conflicts;
    }

    private static String buildMessage(Collection<Conflict> conflicts) {
        TreeFormatter formatter = new TreeFormatter();

        String plural = getPluralEnding(conflicts);
        formatter.node("Conflict" + plural + " found for the following module" + plural);
        formatter.startChildren();

        assert distinguishingAttribute != null;

        AttributeDescriber describer = AttributeDescriberSelector.selectDescriber(failure.getRequestedAttributes(), schema);
        TreeFormatter formatter = new TreeFormatter();
        summarizeAmbiguousVariants(failure, describer, formatter, false);
        buildSpecificAttributeSuggestionMsg(failure, distinguishingAttribute, formatter);
        return formatter.toString();
    }

            }

            generatedClass = generationVisitor.generate();
        } catch (ClassGenerationException e) {
            throw e;
        } catch (Throwable e) {
            TreeFormatter formatter = new TreeFormatter();
            formatter.node("Could not generate a decorated class for type ");
            formatter.appendType(type);
            formatter.append(".");

    @Override
    public String toString() {
        return getDisplayName();
    }

    /**
     * This is final - override {@link #appendContents(TreeFormatter)}  instead to add type specific content.
     */
    @Override
    public final TreeFormatter describeContents(TreeFormatter formatter) {
        formatter.node("collection type: ").appendType(getClass()).append(" (id: ").append(String.valueOf(System.identityHashCode(this))).append(")");