private static List<Boolean> parametersNullabilityOf(CtBehavior behavior) {
        NullableParametersVisitor visitor = new NullableParametersVisitor(behavior)
        new ClassReader(byteCodeFrom(behavior.getDeclaringClass())).accept(visitor, 0)
        return visitor.parametersNullability
    }

    static class NullableParametersVisitor extends ClassVisitor {

        private final CtBehavior behavior