RefactoredDomainModel.cs

public class ActivatableLogic : LogicBase<IActivatableEntity>, IActivatableEntityLogic
{
    public void Active()
    {
        CurrentInstance.IsActive = true;
    }

    public void DeActivate()
    {
        CurrentInstance.IsActive = false;
    }
}

[MData]
public interface IActivatableEntity : IActivatableEntityLogic
{
    bool IsActive { get; set; }
        
}

public interface IActivatableEntityLogic
{
    void Active();
    void DeActivate();
}