_deltas.put((PropertyKey) key, null);
}
if (key instanceof PropertyKey)
{
PropertyKey propKey = (PropertyKey)key;
if (propKey.isPartialStateHolder())
{
_getPartialStateHolderTracker(true).removeProperty(propKey);
}
if (!useDeltas && propKey.getMutable().isAtLeastSometimesMutable())
{
PropertyTracker mutableTracker = _getMutableTracker(false);
if (mutableTracker != null)
mutableTracker.removeProperty(propKey);