var metadataVersion: IntArray? = null
        var data1: Array<String>? = null
        var data2: Array<String>? = null
        var extraString: String? = null
        var packageName: String? = null
        var extraInt: Int? = null
        kotlinMetadataAnnotation.values.forEach {
            // see Metadata.kt
            when (it) {
                is SimpleAnnotationValue ->
                    when (it.name) {

                extraString = annotation.getMemberValue("xs")?.stringValue ?: "",
                packageName = annotation.getMemberValue("pn")?.stringValue ?: "",
                extraInt = annotation.getMemberValue("xi")?.intValue ?: 0
            )
        }

    private
    inline fun <reified T : Any> CtClass.ctAnnotation(): Annotation? =
        getAnnotation(T::class.java)