Function ringbuffer_pre_insert 

pub fn ringbuffer_pre_insert<T: CommandTransaction, F>(
    f: F,
) -> ClosureRingBufferPreInsertInterceptor<T, F>
where
    F: for<'a> Fn(&mut RingBufferPreInsertContext<'a, T>) -> Result<()> + Send + Sync + Clone + 'static,