async fn next_unique_id<const C: usize>(
env: &MetaSrvEnv,
num: impl TryInto<u32> + Display + Copy,
) -> Result<TypedPrimitive<C, u64>>async fn next_unique_id<const C: usize>(
env: &MetaSrvEnv,
num: impl TryInto<u32> + Display + Copy,
) -> Result<TypedPrimitive<C, u64>>