UnityのSplashScreenに自動的にSpriteを追加して自分自身は消滅するスクリプト

AutoAddImageToSplashScreen.cs

using System;
using System.Linq;
using UnityEngine;
using UnityEditor;
   
[InitializeOnLoad]
public class AutoAddImageToSplashScreen
{
    private static string IMAGEPATH = "Assets/Textures/SplashScreen/Image.png";
    private static string THISPATH = "Assets/Editor/AutoAddImageToSplashScreen.cs";
       
    static AutoAddImageToSplashScreen()
    {
        EditorApplication.delayCall += () => AssignLogos();
    }
       
    public static void AssignLogos()
    {
        Sprite imageSprite = (Sprite) AssetDatabase.LoadAssetAtPath(IMAGEPATH, typeof(Sprite));
           
        var currentLogos = PlayerSettings.SplashScreen.logos;
   
        if(currentLogos.Select(l => l.logo).Contains(imageSprite))        
        {
            if (EditorUtility.DisplayDialog("Add image to SplashScreen","Image already added.", "OK"))
            {
                Selection.activeObject = Unsupported.GetSerializedAssetInterfaceSingleton("PlayerSettings");
            }
            return;;
        }
           
        var newLogos = new PlayerSettings.SplashScreenLogo[currentLogos.Length + 1];
           
        Array.Copy(currentLogos, newLogos, currentLogos.Length);
           
        newLogos[newLogos.Length -1] = PlayerSettings.SplashScreenLogo.Create(2f, imageSprite);
   
        PlayerSettings.SplashScreen.logos = newLogos;
        PlayerSettings.SplashScreen.drawMode = PlayerSettings.SplashScreen.DrawMode.AllSequential;
   
        if (EditorUtility.DisplayDialog("Add image to SplashScreen","Added Image SplashScreen.", "OK"))
        {
            Selection.activeObject = Unsupported.GetSerializedAssetInterfaceSingleton("PlayerSettings");
            AssetDatabase.DeleteAsset(THISPATH);
        }
    }
}