PEGI Custom Editor.cs

// Article:   https://medium.com/@quizcanners/unity-i-have-a-custom-editor-for-every-script-5eddf20fdacc

using System.Collections.Generic;
using QuizCanners.Inspector;

#if UNITY_EDITOR
using UnityEditor;
#endif

 public class SomeScript : MonoBehaviour: IPEGI {
 
      public List<SomeData> list = new List<SomeData>();
      
        private int inspecteedElement = -1;
        
        public void Inspect() 
        {
            "My Important list".edit_List(ref list, ref inspecteedElement);
        }
 }

#if UNITY_EDITOR
    [CustomEditor(typeof(SomeScript))]
    public class SomeScriptDrawer : PEGI_Inspector<SomeScript> { }
#endif