pub unsafe extern "system" fn WsRequestSecurityToken(
    channel: *const WS_CHANNEL,
    properties: *const WS_REQUEST_SECURITY_TOKEN_PROPERTY,
    propertycount: u32,
    token: *mut *mut WS_SECURITY_TOKEN,
    asynccontext: *const WS_ASYNC_CONTEXT,
    error: *const WS_ERROR
) -> HRESULT