return null
    }

    private static List<Boolean> typeParametersNullabilityOf(CtClass ctClass) {
        NullableClassTypeParametersVisitor visitor = new NullableClassTypeParametersVisitor()
        new ClassReader(byteCodeFrom(ctClass)).accept(visitor, 0)
        return visitor.typeParametersNullability
    }

    static class NullableClassTypeParametersVisitor extends ClassVisitor {

    }

    @Override
    public void visit(PackageDeclaration packageDeclaration, ClassMetaDataRepository<ClassMetaData> repository) {
        this.packageName = packageDeclaration.getNameAsString();
        super.visit(packageDeclaration, repository);
    }

    @Override
    public void visit(ClassOrInterfaceDeclaration classDeclaration, ClassMetaDataRepository<ClassMetaData> repository) {

    private
    val visitedSignature: MethodSignatureVisitor? by unsafeLazy {
        delegate.signature?.let { signature ->
            MethodSignatureVisitor(asmLevel).also { visitor -> SignatureReader(signature).accept(visitor) }
        }
    }
}


data class ApiTypeUsage(
    val sourceName: String,
    internal val isNullable: Boolean = false,
    val type: ApiType? = null,

        accessResult.setUrl("https://example.com/visited");
        accessResultMap.put("https://example.com/visited", accessResult);

        UrlQueueImpl<Long> newUrl = new UrlQueueImpl<>();
        newUrl.setSessionId(sessionId);
        newUrl.setUrl("https://example.com/new");

        UrlQueueImpl<Long> visited = new UrlQueueImpl<>();
        visited.setSessionId(sessionId);
        visited.setUrl("https://example.com/visited");

    }

    public void analyzePom(Model model) {
        totalPoms++;
        Set<Object> visited = new HashSet<>();
        processModelNode(model, "/project", "project", visited);
    }

    private void processModelNode(Object node, String currentPath, String elementName, Set<Object> visited) {
        if (node == null || !visited.add(node)) {
            return;
        }

        Class<?> clazz = node.getClass();

    limiter.acquire(Integer.MAX_VALUE / 4);
    limiter.acquire(Integer.MAX_VALUE / 2);
    limiter.acquire(Integer.MAX_VALUE);
    assertEvents("R0.00", "R0.00", "R0.00");

    limiter.setRate(1.0);
    limiter.acquire();
    limiter.acquire();
    limiter.acquire();
    assertEvents("R0.00", "R1.00", "R1.00");

    limiter.acquire(Integer.MAX_VALUE / 4);
    limiter.acquire(Integer.MAX_VALUE / 2);
    limiter.acquire(Integer.MAX_VALUE);
    assertEvents("R0.00", "R0.00", "R0.00");

    limiter.setRate(1.0);
    limiter.acquire();
    limiter.acquire();
    limiter.acquire();
    assertEvents("R0.00", "R1.00", "R1.00");

                throw new ArtifactDescriptorException(result);
            }

            if (!visited.add(a.getGroupId() + ':' + a.getArtifactId() + ':' + a.getBaseVersion())) {
                RepositoryException exception =
                        new RepositoryException("Artifact relocations form a cycle: " + visited);
                invalidDescriptor(session, trace, a, exception);

                    visit(contributor);
                }
                for (MailingList mailingList : model.getMailingLists()) {
                    visit(mailingList);
                }
                visit(model.getPrerequisites());
                visit(model.getScm());
                visit(model.getIssueManagement());
                visit(model.getCiManagement());
                visit(model.getBuild());

        final CrawlerContext crawlerContext = CrawlingParameterUtil.getCrawlerContext();
        final UrlQueueService<UrlQueue<?>> urlQueueService = CrawlingParameterUtil.getUrlQueueService();
        if (!urlQueueService.visited(urlQueue)) {
            if (checkAccessCount(crawlerContext)) {
                final AccessResult<?> accessResult = createAccessResult(responseData, resultData);
                if (logger.isDebugEnabled()) {