vb.net - How to shadow an interface property? -

i've got generic interface inherits non-generic interface. somehow compiler does't how i've done this. i'd appreciate in figuring out how accomplish inheritance in manner compiler doesn't whine about.

public interface imessage      property messagetype uint16      property payload object  end interface   public interface imessage(of t)     inherits imessage      shadows property payload t  end interface   public class message(of t)     implements imessage(of t)    '  <-- line highlighted in vs.        public property messagetype uint16 = 0 implements imessage(of t).messagetype      public property payload t = nothing implements imessage(of t).payload  end class 

class 'message' must implement 'property payload object' interface 'imessage'. implementing property must have matching 'readonly' or 'writeonly' specifiers.

  shadows property payload t 

by using shadows, tell compiler payload property intentionally not match base property. generic interface has two properties, 1 as object, other as t. implementing interface therefore requires implement them both:

public class message(of t)     implements imessage(of t)      public property messagetype uint16 = 0 implements imessage(of t).messagetype     public property payload t = nothing implements imessage(of t).payload     private property payload1 object implements imessage.payload                     return payload         end         set(value object)             payload = ctype(value, t)         end set     end property end class 

this not want do, i'm sure. best address real problem, there no visible use non-generic interface. if have 1 anyway snippet shows it.