SuperDOM Column OnMarketDepth not suitable method to override

[habibalex]

Edit: nevermind found it. https://ninjatrader.com/support/help...arketdepth.htm

While making a superdom column, I'm getting a compile error saying: OnMarketDepth no suitable method found to override

protected override void OnMarketDepth(MarketDepthEventArgs e)
        {

OnMarketData seems to work. Is OnMarketDepth not available in the superdom columns?