module-editoruitoolkitcustomization/Editor/Settings/EditorUIToolkitSettings.cs

using System;
using UnityEditor;
using UnityEngine;

namespace Module.EditorUIToolkitCustomization.Editor
{
    [Serializable]
    internal sealed class EditorUIToolkitSettings
    {
        public bool collectionViewDisableMaxHeight = true;

        private static EditorUIToolkitSettings _settings;

        internal void Save()
        {
            var json = JsonUtility.ToJson(this);
            EditorPrefs.SetString(nameof(EditorUIToolkitSettings), json);
        }

        internal static EditorUIToolkitSettings Load()
        {
            if (_settings != null)
                return _settings;
        
            _settings = new EditorUIToolkitSettings();
            var json = EditorPrefs.GetString(nameof(EditorUIToolkitSettings), string.Empty);
        
            if (!string.IsNullOrEmpty(json))
                JsonUtility.FromJsonOverwrite(json, _settings);
            
            return _settings;
        }
    }
}