[dynamic, provider("AssocProvider")]
class ProvToProv
{
    [key] __Win32Provider ref p1;
    [key] __Win32provider ref p2;
};

instance of AssociationRule
{
    AssociationClass="ProvToProv";
    PropertyName1 = "p1";
    PropertyName2 = "p2";
    PropertyQuery1 = "select * from __Win32Provider";
    PropertyQuery2 = "select * from __Win32Provider";
};