pub struct AsyncIUnknownVtbl {
    pub parent: IUnknownVtbl,
    pub Begin_QueryInterface: unsafe extern "system" fn(This: *mut AsyncIUnknown, riid: REFIID) -> HRESULT,
    pub Finish_QueryInterface: unsafe extern "system" fn(This: *mut AsyncIUnknown, ppvObject: *mut *mut c_void) -> HRESULT,
    pub Begin_AddRef: unsafe extern "system" fn(This: *mut AsyncIUnknown) -> HRESULT,
    pub Finish_AddRef: unsafe extern "system" fn(This: *mut AsyncIUnknown) -> ULONG,
    pub Begin_Release: unsafe extern "system" fn(This: *mut AsyncIUnknown) -> HRESULT,
    pub Finish_Release: unsafe extern "system" fn(This: *mut AsyncIUnknown) -> ULONG,
}Fields
                             | parent |  | 
                             | Begin_QueryInterface |  | 
                             | Finish_QueryInterface |  | 
                             | Begin_AddRef |  | 
                             | Finish_AddRef |  | 
                             | Begin_Release |  | 
                             | Finish_Release |  |