private void RemoveElementInternal(GraphElement element)
{
if (element == null)
{
throw new ArgumentException("Cannot remove null element from this scope");
}
if (!m_ContainedElements.Contains(element))
{
throw new ArgumentException("This element is not contained in this scope");
}
element.UnregisterCallback <GeometryChangedEvent>(OnSubElementGeometryChanged);
m_ContainedElements.Remove(element);
element.SetContainingScope(null);
ScheduleUpdateGeometryFromContent();
}
