Function HlinkCreateExtensionServices 

pub unsafe fn HlinkCreateExtensionServices<P0, P2, P3, P4, T>(
    pwzadditionalheaders: P0,
    phwnd: HWND,
    pszusername: P2,
    pszpassword: P3,
    piunkouter: P4,
) -> Result<T, Error>
where
    P0: Param<PCWSTR>,
    P2: Param<PCWSTR>,
    P3: Param<PCWSTR>,
    P4: Param<IUnknown>,
    T: Interface,