/// <summary>Enqueues an item to the priority queue.</summary>
/// <param name="priority">The priority of the object to be enqueued.</param>
/// <param name="value">The object to be enqueued.</param>
public virtual void Enqueue(int priority, object value)
{
_heap.Insert(priority, value);
}
/// <summary>Adds an item to the heap.</summary>
/// <param name="key">The key for this entry.</param>
/// <param name="value">The value for this entry.</param>
public override void Insert(IComparable key, object value)
{
lock (_heap.SyncRoot) _heap.Insert(key, value);
}