public override void OnGUI(string searchContext)
        {
            GUILayout.Space(10);
            // アセットがなければ作らせる
            if (_data == null)
            {
                if (GUILayout.Button("Create Asset"))
                {
                    var path = EditorUtility.SaveFilePanelInProject(
                        "Select Save Folder",
                        "GoogleOAuthClientData",
                        "asset", "");
                    if (string.IsNullOrEmpty(path))
                    {
                        return;
                    }

                    _data = ScriptableObject.CreateInstance <GoogleOAuthClientData>();
                    AssetDatabase.CreateAsset(_data, path);
                    AssetDatabase.SaveAssets();
                    AssetDatabase.Refresh();
                }
                return;
            }

            using (var check = new EditorGUI.ChangeCheckScope())
            {
                EditorGUILayout.TextField("ClientId", _data.ClientId);
                EditorGUILayout.TextField("ClientSecret", _data.ClientSecret);
                if (check.changed)
                {
                }
            }
        }
        public override void OnActivate(string searchContext, VisualElement rootElement)
        {
            base.OnActivate(searchContext, rootElement);
            var finds = AssetDatabase.FindAssets($"t:{nameof(GoogleOAuthClientData)}");

            if (finds.Length <= 0)
            {
                return;
            }

            var path = AssetDatabase.GUIDToAssetPath(finds[0]);

            _data = AssetDatabase.LoadAssetAtPath <GoogleOAuthClientData>(path);
        }
 public override void OnDeactivate()
 {
     _data = null;
 }