def table = getSection(title).table[0]
        if (!table) {
            throw new RuntimeException("Section '$title' does not contain a <table> element.")
        }
        if (!table.thead[0]) {
            throw new RuntimeException("Table '$title' does not contain a <thead> element.")
        }
        if (!table.thead[0].tr[0]) {
            throw new RuntimeException("Table '$title' does not contain a <thead>/<tr> element.")

            throw new RuntimeException("Cycle building $className. Currently building $currentlyBuilding")
        }
        currentlyBuilding.addLast(className)
        try {
            ClassMetaData classMetaData = classMetaData.find(className)
            if (!classMetaData) {
                if (!className.contains('.internal.')) {

        if (!sourceFile.name.endsWith('.java')) {
            throw new DocGenerationException("Parsing non-Java files is not supported: $sourceFile")
        }
        try {
            new JavaParser().parse(sourceFile).getResult().get().accept(new SourceMetaDataVisitor(), repository)
        } catch (Exception e) {
            throw new DocGenerationException("Could not parse '$sourceFile'.", e)
        }
    }

            List<String> badFiles = MONITORED_FILES.grep { isBadFileInMergeCommit(it, commit, parentCommits[0], parentCommits[1]) }
            if (!badFiles.isEmpty()) {
                throw new RuntimeException("Found bad files in merge commit $commit: $badFiles")
            } else {
                println("No bad files found in $commit")
            }
        } else {

        this.referringClass = referringClass
        this.metaData = propertyMetaData
        id = "${referringClass.className}:$name"
        this.comment = comment
        if (additionalValues == null) {
            throw new NullPointerException("additionalValues constructor var is null for referringClass: $referringClass")
        }
        this.additionalValues = additionalValues
    }

    PropertyDoc forClass(ClassDoc referringClass) {

            def pluginId = plugin.'@id'
            if (!pluginId) {
                throw new RuntimeException("No id specified for plugin: ${plugin.'@description' ?: 'unknown'}")
            }
            plugin.extends.each { Element e ->
                def targetClass = e.'@targetClass'
                if (!targetClass) {
                    throw new RuntimeException("No targetClass specified for extension provided by plugin '$pluginId'.")

        linkRepository.load(linksFile.get().asFile)

        findAll(doc, 'apilink').each { Element element ->
            String className = element.'@class'
            if (!className) {
                throw new RuntimeException('No "class" attribute specified for <apilink> element.')
            }
            String methodName = element.'@method'

            def classMetaData = linkRepository.get(className)

        }

        if (node instanceof Text) {
            target.append(node.nodeValue.replace('&', '&amp;').replace('<', '&lt;').replace('>', '&gt;'))
            return
        }

        throw new UnsupportedOperationException("Don't know how to format DOM node: $node")
    }