<interface_header> ::=
<[> <interface_attributes> <]> interface <Identifier> [ <:> <Identifier> ]
For example:
[object, uuid(b5483f00-4f6c-101b-a1c7-00aa00389acb)]
interface IBar : IWazoo {
HRESULT Bar([in] short i, [in] IFoo * pIF);
};
cases the first methods in IBar to be the methods of IWazoo.