Simulation/Assets/Scripts/Manager/DataManager.cs

using UnityEngine;
using System;
using System.Collections.Generic;
using System.Linq;
public class DataManager : UnitySingleton<DataManager>
{
    public bool isPlaying = false;
    List<SimulationModel> models = new List<SimulationModel>();

    public event Action<List<SimulationModel>> onModelsUpdated;
    public void AddModel(SimulationModel model)
    {
        if (models.Any(x => x == model))
            return; 
        int objCount = models.FindAll(x => x.modelName.Contains(model.modelName)).Count;
        model.modelName = model.modelName + "_" + objCount.ToString(); 
        models.Add(model);
        onModelsUpdated?.Invoke(models);
    }
    public void RemoveModel(SimulationModel model)
    {
        if (models.Any(x => x == model))
            return;
        models.Remove(model);
        onModelsUpdated?.Invoke(models);
    }

    public List<SimulationModel> GetModels()
    {
        return models;
    }
    public SimulationModel GetModel(string nodeID)
    {
        if (nodeID == null) return null;
        SimulationModel model = models.Find(x => x.nodeID.Equals(nodeID));
        return model;
    }
}