/// <summary>
///
/// </summary>
/// <param name="value"></param>
public void Remove(Value value)
{
if (value == null)
return;
value.PropertyChanged -= ValueObserver;
Verbose("Remove Value");
}
/// <summary>
///
/// </summary>
/// <param name="value"></param>
public void Add(Value value)
{
if (value == null)
return;
value.PropertyChanged += ValueObserver;
Verbose("Add Value");
}