title: How to display & modify array in the Editor Window?
body: <p>I have GameObject array field in my CustomEditor class derived from the UnityEngine.Editor. I need to be able to display (draw) and give user ability to modify that array.</p>
  
  <p>Just like how Unity's Inspector doing this for Serializable fields of objects derived from the ScriptableObject. E.g. displaying materials array in the inspector:
  <a href="https://i.stack.imgur.com/RGwwD.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/RGwwD.jpg" alt="."></a></p>