C#

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public abstract class Indicator : ExtendedIndicator
{
    [global::Newtonsoft.Json.JsonIgnoreAttribute]
    protected ITradingManager? TradingManager { get; }
}

class MyTradingManager
{
      public ITradingManager _tradeManager;


      public MyTradeManager(ITradingManager argTradingManager)
      {
       _tradeManager = argTradingManager;
      }

}

internal class SampleIndicator : Indicator
{
      MyTradeManager _tradingManager;

      public SampleIndicator ()
      {
           _tradingManager = new(TradingManager ); <- Here the problem occurs !!!
      }
}