public void Clear()
{
Btree.Clear();
}
// todo: set thread to certain ID, Store in Synchronizer the BTreeReader for a given thread.
/// <summary>
/// Removes all items from the <see cref="T:System.Collections.Generic.ICollection`1"/>.
/// </summary>
/// <exception cref="T:System.NotSupportedException">The <see cref="T:System.Collections.Generic.ICollection`1"/> is read-only.
/// </exception>
public void Clear()
{
Locker.Lock();
Btree.Clear();
Locker.Unlock();
}