for (DependencyNode child : root.getChildren()) {
            if (child.getArtifact() == null) {
                continue;
            }
            String childType = child.getArtifact().getProperty(ArtifactProperties.TYPE, "");
            if (!PROCESSOR_TYPE_IDS.contains(childType)) {
                continue;
            }
            for (DependencyNode transitive : child.getChildren()) {

            buf.append('[');
            boolean first = true;
            for (final Object child : (String[]) obj) {
                if (first) {
                    first = false;
                } else {
                    buf.append(',');
                }
                buf.append(escapeJson(child));
            }
            buf.append(']');
        } else if (obj instanceof List<?>) {

        if (file.isDirectory()) {
            final File[] children = file.listFiles();
            if (children != null) {
                for (final File child : children) {
                    deleteRecursively(child);
                }
            }
        }
        file.delete();
    }

    // ===================================================================================