}

    /**
     * Extracts text from the Visio input stream.
     * @param in The input stream.
     * @param params The parameters.
     * @return The extracted data.
     */
    @Override
    public ExtractData getText(final InputStream in, final Map<String, String> params) {
        if (in == null) {
            throw new CrawlerSystemException("Microsoft Visio input stream is null. Cannot extract text from null input.");

        extractorFactory.addExtractor("application/vnd.ms-excel", tikaExtractor);
        extractorFactory.addExtractor("application/vnd.ms-powerpoint", tikaExtractor);
        extractorFactory.addExtractor("application/vnd.visio", tikaExtractor);
        extractorFactory.addExtractor("application/pdf", pdfExtractor);
        extractorFactory.addExtractor("application/x-lha", lhaExtractor);

    object : SinceVisitor() {

        override fun visit(declaration: ClassOrInterfaceDeclaration, arg: Unit?): SinceTagStatus? =
            declaration.getSinceIfMatchesName(classSimpleName) ?: super.visit(declaration, arg)

        override fun visit(declaration: AnnotationDeclaration, arg: Unit?): SinceTagStatus? =
            declaration.getSinceIfMatchesName(classSimpleName) ?: super.visit(declaration, arg)

        lexer.pushText("<P></End>")
        lexer.visit(visitor)

        then:
        1 * visitor.onStartHtmlElement('p')
        1 * visitor.onStartHtmlElementComplete('p')
        1 * visitor.onEndHtmlElement('end')
        1 * visitor.onEnd()
        0 * visitor._
    }

    def parsesHtmlEntities() {
        when:
        lexer.pushText("before &amp; after")
        lexer.visit(visitor)

        then:

 * new TypeVisitor() {
 *   protected void visitParameterizedType(ParameterizedType t) {
 *     visit(t.getOwnerType());
 *     visit(t.getActualTypeArguments());
 *   }
 *   protected void visitGenericArrayType(GenericArrayType t) {
 *     visit(t.getGenericComponentType());
 *   }
 *   protected void visitTypeVariable(TypeVariable<?> t) {
 *     throw new IllegalArgumentException("Cannot contain type variable.");
 *   }

 *
 * @since 4.0.0
 */
@Experimental
@Consumer
public interface NodeVisitor {
    /**
     * Starts the visit to the specified dependency node.
     *
     * @param node the dependency node to visit
     * @return <code>true</code> to visit the specified dependency node's children, <code>false</code> to skip the
     *         specified dependency node's children and proceed to its next sibling
     */

                }
            }
        }
        return sortedNodes;
    }

    // Helper method to visit a node
    private static void visitNode(BuildStep node, Set<BuildStep> visited, List<BuildStep> sortedNodes) {
        if (visited.add(node)) {
            // For each successor of the current node, visit unvisited successors
            node.successors.forEach(successor -> visitNode(successor, visited, sortedNodes));

            } else {
                ClasspathGraphVisitor v = new ClasspathGraphVisitor(cleanGraph, cpc);
                MetadataGraphVertex entry = cleanGraph.getEntry();
                // entry point
                v.visit(entry);
            }

            return cpc;
        } catch (GraphConflictResolutionException e) {
            throw new MetadataGraphTransformationException(e);
        }
    }

        if (g.getVertices().size() == 1) {
            return g;
        }

        List<MetadataGraphVertex> visited = new ArrayList<>(g.getVertices().size());
        visit(g.getEntry(), visited, g);

        List<MetadataGraphVertex> dropList = new ArrayList<>(g.getVertices().size());

        // collect drop list
        for (MetadataGraphVertex v : g.getVertices()) {

        document.accept(new AbstractVisitor() {
            @Override
            public void visit(final Link link) {
                final String destination = link.getDestination();
                if (StringUtil.isNotBlank(destination)) {
                    links.add(destination);
                }
                super.visit(link);
            }
        });

        if (!links.isEmpty()) {