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: table.rs
    path of file: ./repos/tfs/atomic-hashmap/src
    
    the code of the file until where you have to start completion: //! The internal table structure.

use std::hash::Hash;
use std::{mem, ptr};
use std::sync::atomic;
use sponge::Sponge;
use conc;

/// A key-value pair.
#[derive(Clone)]
pub struct Pair<K, V> {
    // The key.
    pub key: K,
    // The value.
    pub val: V,
}

/// A node in the tree.
enum Node<K, V> {
    /// A leaf containing a key-value pair.
    Leaf(Pair<K, V>),
    /// A branch to a subtable.
    Branch(Table<K, V>),
}

/// A table.
///
/// Tables are nothing but an array of buckets, being represented by atomic pointers. It can be
/// viewed as a lower-level API of the hash map itself.
pub struct Table<K, V> {
    /// The buckets in the table.
    buckets: [conc::Atomic<Node<K, V>>; 256],
}

impl<K: Hash + Eq + 'static + Clone, V: Clone> Table<K, V> {
    /// Create a table containing two particular entries.
    ///
    /// This takes two key-value pairs, `pair_a` and `pair_b`, and their respective sponges, and
    /// creates a table containing both pairs.
    fn two_entries(
        pair_a: Pair<K, V>,
        mut sponge_a: Sponge,
        pair_b: Pair<K, V>,
        mut sponge_b: Sponge,
    ) -> Table<K, V> {
        // Start with an empty table.
        let mut table = Table::default();

        // Squeeze the two sponges.
        let pos_a = sponge_a.squeeze();
        let pos_b = sponge_b.squeeze();

        if pos_a != pos_b {
            // The two position did not collide, so we can insert the two pairs at the respective
            // positions
            table.buckets[pos_a as usize] = conc::Atomic::new(Some(Box::new(Node::Leaf(pair_a))));
            table.buckets[pos_b as usize] = conc::Atomic::new(Some(B
    
    pub fn remove(&self, key: &K, mut sponge: Sponge) -> Option<conc::Guard<V>> {
        // We squeeze the sponge to get the right bucket of our table, in which we will potentially
        // remove the key.
        let bucket = &self.buckets[sponge.squeeze() as usize];

        // Load the node.
        let mut node = bucket.load(atomic::Ordering::Acquire);

        // To avoid the ABA problem, this loop is unfortunately necessary, but keep in mind that it
        // will rarely run more than one iteration, nor is it mutually exclusive in any way, it
        // just ensures that the bucket doesn't change in the meantime in certain specific cases.
        while let Some(some_node) = node {
            // Handle the respective cases.
            match *some_node {
                // There is a branch, so we must remove the key in the sub-table.
                Node::Branch(ref table) => return table.remove(key, sponge),
                // There was a node with the key, which we will try to remove. We use CAS in order
                // to make sure that it is the same node as the one we read (`bucket`), otherwise
                // we might remove a wrong node.
                Node::Leaf(Pair { key: ref found_key, ref val }) if found_key == key
                    => match bucket.compare_and_swap(Some(&*some_node), None, atomic::Ordering::Release) {
                    // Removing the node succeeded: It wasn't changed in the meantime.
                    // TODO: I spent waaaay too long at trying to make this work without `unsafe`,
                    //       but it doesn't allow me to. Try to remove the `mem::transmute` and
                    //      `ptr::read` to see why.
                    Ok(_) => return Some(unsafe { ptr::read(&some_node) }.map(|_| unsafe { mem::transmute(val) })),
                    // The CAS failed, meaning that in the meantime, the node was changed, so we
                    // update the node variable and redo the loop to handle the new case.
                    Err((actual, _)) => node = actual,
                },
                // A node with a non-matching key was found. Hence, we have nothing to remove.
                Node::Leaf(..) => return None,
            }
        }

        // Suppose the node was `None`, then there would be nothing to remove, hence nothing gets
        // removed, and thus the correct return value is `None`.
        None
    }