}

    Violation maybeViolation(final JApiCompatibility member) {
        if (!(member instanceof JApiClass)) {
            return null
        }

        if (!changed(member)) {
            return null
        }

        Optional<CtClass> oldClass = member.oldClass
        Optional<CtClass> newClass = member.newClass
        if (!oldClass.isPresent() || !newClass.isPresent()) {

        if (member instanceof JApiClass) {
            return isIncubatingClass((JApiClass) member)
        }
        if (member instanceof JApiMethod) {
            return isIncubatingOrOverrideMethod((JApiMethod) member)
        }
        if (member instanceof JApiField) {
            return isIncubatingField((JApiField) member)
        }
        if (member instanceof JApiConstructor) {

                    // with the sort used by AbstractAcceptedApiChangesMaintenanceTask.
                    result.acceptedApiChanges.sort((a, b) => { 
                        if ((a.type +'#' + a.member) > (b.type + '#' + b.member)) {
                            return 1; 
                        } else {
                            return -1;
                        }
                    });

        // TODO: Implement this with the worker API
        workerLeaseService.runAsIsolatedTask({
            source.visit { FileVisitDetails fvd ->
                if (fvd.isDirectory()) {
                    return
                }
                if (!fvd.getFile().getName().endsWith(".xml")) {
                    return
                }

                String newFileName = fvd.file.name.replaceAll('.xml$', '.html')

                if (!oldNullability && newNullability) {
                    errors << "From non-nullable to nullable breaking change"
                } else if (oldNullability && !newNullability) {
                    warnings << "Nullability changed from nullable to non-nullable"
                }
            } else if (oldNullability != newNullability) {
                errors << "Nullability breaking change"
            }

 * e.g https://github.com/gradle/gradle/pull/25825
 *
 * This script is to check if there is any merge commit that brings changes from release branch to master.
 * Usage: groovy CheckBadMerge.groovy <commit1> <commit2> ...
 * If any "bad" merge commit is found, it will print the details and exit with non-zero code.
 */
class CheckBadMerge {

        apiElement    | jApiTypeName
        'interface'   | 'jApiClassifier'
        'method'      | 'jApiMethod'
        'field'       | 'jApiField'
        'constructor' | 'jApiConstructor'
    }

    def "if a type is annotated with @Incubating a new #apiElement does not require it"() {
        given:
        JApiCompatibility jApiType = getProperty(jApiTypeName)

        when:

    @InputArtifact
    abstract Provider<FileSystemLocation> getArtifact()

    @Override
    void transform(TransformOutputs outputs) {
        File artifactFile = artifact.get().asFile
        if (artifactFile.name == 'gradle-dependencies') {
            (artifactFile.listFiles() as List<File>).sort { it.name }.each {
                outputs.file(it)
            }
        }
    }

        newInterfaces.keySet().removeAll(oldInterfaces.keySet())

        if (newInterfaces.isEmpty()) {
            return null
        }

        List<String> changes = filterChangesToReport(newClass, newInterfaces)
        if (changes.isEmpty()) {
            return null
        }

        Logging.getLogger(this.getClass()).lifecycle( "Parsed $counter classes in ${elapsedTime}")
    }

    def parse(File sourceFile, ClassMetaDataRepository<gradlebuild.docs.dsl.source.model.ClassMetaData> repository) {
        if (!sourceFile.name.endsWith('.java')) {
            throw new DocGenerationException("Parsing non-Java files is not supported: $sourceFile")
        }
        try {