tk2dSpriteCollectionData.OnDestroy C# (CSharp) Method

    void OnDestroy()
    {
        if (Transient)
        {
            foreach (Material material in materials)
            {
                DestroyImmediate(material);
            }
        }
        else if (needMaterialInstance) // exclusive
        {
            foreach (Material material in materialInsts)
            {
                DestroyImmediate(material);
            }
        }

        ResetPlatformData();
    }