public void RemoveChild()
{
VFXModel modelA = ScriptableObject.CreateInstance <VFXModelA>();
VFXModel modelB = ScriptableObject.CreateInstance <VFXModelB>();
VFXModel modelC = ScriptableObject.CreateInstance <VFXModelC>();
// First add children but don't notify
modelB.Attach(modelA, false);
modelC.Attach(modelB, false);
// Test both interfaces
s_logs.Clear();
modelC.Detach();
modelA.RemoveChild(modelB);
Assert.AreEqual(0, modelA.GetNbChildren());
Assert.IsNull(modelB.GetParent());
Assert.AreEqual(0, modelB.GetNbChildren());
Assert.IsNull(modelC.GetParent());
Assert.AreEqual(5, s_logs.Count);
Assert.AreEqual("OnRemoved VFXModelC", s_logs[0]);
Assert.AreEqual("OnInvalidate VFXModelB kStructureChanged", s_logs[1]);
Assert.AreEqual("OnInvalidate VFXModelA kStructureChanged", s_logs[2]);
Assert.AreEqual("OnRemoved VFXModelB", s_logs[3]);
Assert.AreEqual("OnInvalidate VFXModelA kStructureChanged", s_logs[4]);
}