System\Collections\Immutable\ImmutableList_1.Node.cs (3)
733internal bool Contains(T item, IEqualityComparer<T> equalityComparer) => Contains(this, item, equalityComparer);
1586private static bool Contains(Node node, T value, IEqualityComparer<T> equalityComparer) => !node.IsEmpty && (equalityComparer.Equals(value, node._key) || Contains(node._left!, value, equalityComparer) || Contains(node._right!, value, equalityComparer));