ProjectDDD/Assets/_DDD/_Scripts/RestaurantController/FlowController.cs

using System.Threading.Tasks;
using UnityEngine;

namespace DDD
{
    public abstract class FlowController : ScriptableObject
    {
        public abstract Task InitializeController();

        public abstract Task InitializeState();

        public abstract Task OnReadyNewFlow(GameFlowState newFlowState);

        public abstract Task OnExitCurrentFlow(GameFlowState exitingFlowState);
    }
}