/src/SampleLibrary/Proxy/DerivedClassWithVirtualByRefMethod.cs

 1namespace SampleLibrary.Proxy
 2{
 3    public class DerivedClassWithVirtualByRefMethod : ClassWithVirtualByRefMethod
 4    {
 5        public override void ByRefMethod(ref int a)
 6        {
 7            a = 54321;
 8        }
 9    }
10}