gecko-dev/xpcom/proxy/tests/nsITestProxy.idl

#include "nsISupports.idl"

[uuid(1979e980-1cfd-11d3-915e-0000863011c4)]
interface nsITestProxy : nsISupports 
{
    long Test(in long p1, in long p2);
    void Test2();
    void Test3(in nsISupports p1, out nsISupports p2);
};