/// <summary>
/// Initializes a new instance of the <see cref="ImmutableDictionary{TKey, TValue}"/> class.
/// </summary>
/// <param name="root">The root.</param>
/// <param name="comparers">The comparers.</param>
/// <param name="count">The number of elements in the map.</param>
private ImmutableDictionary(SortedInt32KeyNode <HashBucket> root, Comparers comparers, int count)
: this(Requires.NotNullPassthrough(comparers, nameof(comparers)))
{
Requires.NotNull(root, nameof(root));
root.Freeze(s_FreezeBucketAction);
_root = root;
_count = count;
}
/// <summary>
/// Initializes a new instance of the <see cref="ImmutableDictionary<TKey, TValue>"/> class.
/// </summary>
/// <param name="root">The root.</param>
/// <param name="comparers">The comparers.</param>
/// <param name="count">The number of elements in the map.</param>
private ImmutableDictionary(ImmutableSortedDictionary <int, HashBucket> .Node root, Comparers comparers, int count)
: this(Requires.NotNullPassthrough(comparers, "comparers"))
{
Requires.NotNull(root, "root");
root.Freeze(FreezeBucketAction);
this.root = root;
this.count = count;
}