Differing implementations for a function in two interfaces

[Ryan Steen]

In article <e21vvd$1sv1$1 at digitaldaemon.com>, Lionello Lunesu says...

>#void main() {
>#  C c = new C;
>#//  c.get();//error, ambiguity
>#  c.IA.get();//OK, calls IA.get
>#  c.IB.get();//OK, calls IB.get
>#}

This example seems somehow flawed.

Interfaces are in the role of assuring access to some and denying access to some
other public features of the implementation, don't they?

But if one has full access to the implementation as above, then their denials
are ineffective. Therefore this cannot be the usual case.