pub async fn gen_page_session_info_access_token<C: Client + Send + Sync>(
client: &C,
app_id: u64,
page_access_token: impl Into<PageAccessToken>,
) -> Result<Result<(PageSessionInfoAccessToken, Option<AccessTokenExpiresIn>), (StatusCode, ResponseBodyErrJson)>, ClientRespondEndpointError<C::RespondError, EndpointError, EndpointError>>