}

    private static boolean isNullableCtAnnotation(Object ann) {
        if (Proxy.isProxyClass(ann.class)) {
            def typeName = (Proxy.getInvocationHandler(ann) as AnnotationImpl).annotation.typeName
            return NULLABLE_ANNOTATIONS.any { it.name == typeName }
        }
        return false
    }

    private
    inline fun <reified T : Any> CtClass.ctAnnotation(): Annotation? =
        getAnnotation(T::class.java)
            ?.takeIf { Proxy.isProxyClass(it::class.java) }
            ?.let { Proxy.getInvocationHandler(it) as? AnnotationImpl }
            ?.annotation

    private
    val CtMember.jvmSignature: String
        get() = when (this) {
            is CtField -> "$name:$signature"