public void SetValue(CompositeObject owner,
CompositeObjectProperty prop,
IPropertyValue value)
{
Dictionary <CompositeObjectProperty, IPropertyValue> props;
if (!_valueStorage.TryGetValue(owner, out props))
{
props = new Dictionary <CompositeObjectProperty, IPropertyValue>();
_valueStorage.Add(owner, props);
}
var oldValue = props[prop];
props[prop] = value;
oldValue.OnDetached(owner, prop);
value.OnAttached(owner, prop);
}