public void RemoveComputedProperty(ComputedProperty property)
{
if (!computedProperties.Contains(property))
{
throw new InvalidOperationException();
}
computedProperties.Remove(property);
property?.OnDetach();
}
public void AddComputedProperty(ComputedProperty property)
{
if (property.System != null)
{
throw new InvalidOperationException();
}
property.OnAttach(this);
computedProperties.Add(property);
}