[ADVANCED-DOTNET] Interfaces declared "internal" usable by public classes?

[Daniel Michaeloff]

Hi all,

If you have an interface declared as "internal":

 internal interface IFoo {
  IFoo Clone();
 }

can it ever be used by a class at "public"?

 public class Bar : IFoo {
  public IFoo Clone() {
   return null;
  }
        }

Visual Studio gives "return type IFoo is less accessible than method
Bar.Clone()".  But if you use internal instead:

 public class Bar : IFoo {
  internal IFoo Clone() {
   return null;
  }
        }

you get "does not implement interface member Clone().  Clone() is either
static, not public, or has the wrong return type."

Is this by design?

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