You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: split.rs
    path of file: ./repos/kernel/src/drivers/virtio/virtqueue
    
    the code of the file until where you have to start completion: //! This module contains Virtio's split virtqueue.
//! See Virito specification v1.1. - 2.6
#![allow(dead_code)]

use alloc::boxed::Box;
use alloc::collections::VecDeque;
use alloc::rc::Rc;
use alloc::vec::Vec;
use core::cell::RefCell;
use core::ptr
    
	fn dispatch(&self, tkn: TransferToken, notif: bool) {
		let (next_off, next_wrap) = self.ring.borrow_mut().push(tkn);

		if notif {
			// TODO: Check whether the splitvirtquue has notifications for specific descriptors
			// I believe it does not.
			unimplemented!();
		}

		if self.ring.borrow().dev_is_notif() {
			let index = self.index.0.to_le_bytes();
			let mut index = index.iter();
			// Even on 64bit systems this is fine, as we have a queue_size < 2^15!
			let det_notif_data: u16 = next_off >> 1;
			let flags = (det_notif_data | (next_wrap << 15)).to_le_bytes();
			let mut flags = flags.iter();
			let mut notif_data: [u8; 4] = [0, 0, 0, 0];

			for (i, byte) in notif_data.iter_mut().enumerate() {
				if i < 2 {
					*byte = *index.next().unwrap();
				} else {
					*byte = *flags.next().unwrap();
				}
			}

			self.notif_ctrl.notify_dev(&notif_data)
		}
	}