private static void PopAchievement(PermanentAchievementManager.Achievement achievement)
        {
            var assetReference = PermanentAchievementManager.ReturnSpriteAssetReference(achievement);

            _activeAchievements++;
            AssetReferenceLoader.LoadAssetReferenceAsynchronously <Sprite>(assetReference, (returnVariable) =>
            {
                var popUp = PopUps.Dequeue();
                popUp.transform.SetSiblingIndex(_maximumNumberOfActiveAchievements - 1);
                popUp.Show(returnVariable, StringUtilities.AddSpacesBeforeCapitals(achievement.ToString()), PermanentAchievementManager.ReturnDescription(achievement), PermanentAchievementManager.ReturnReward(achievement), () =>
                {
                    _activeAchievements--;
                    PopUps.Enqueue(popUp);
                    popUp.gameObject.SetActive(false);
                });
                AssetReferenceLoader.UnloadAssetReference(assetReference);
                Instance.StartCoroutine(Instance.HandleDelayedAdditions());
            });
        }
        private void CreateListItemAsynchronously(PermanentAchievementManager.Achievement itemName, string description, int reward, AssetReference sprite, bool unlocked)
        {
            var achievementItemGameObject          = Instantiate(DisplayItemAddressableAsGameObject, Display).GetComponentInChildren <AchievementListItem>();
            var achievementItemGameObjectTransform = achievementItemGameObject.transform;

            achievementItemGameObjectTransform.SetParent(Display);
            achievementItemGameObjectTransform.localScale = Vector3.one;

            _achievementListItems.Add(itemName, new AchievementItemStruct(achievementItemGameObject.Background, achievementItemGameObject.ReturnNameDisplay, achievementItemGameObject.ReturnDescriptionDisplay, achievementItemGameObject.ReturnRewardDisplay, achievementItemGameObject.ReturnGraphic, unlocked));
            _achievementListItems[itemName].NameDisplay.text        = StringUtilities.AddSpacesBeforeCapitals(itemName.ToString());
            _achievementListItems[itemName].DescriptionDisplay.text = description;
            _achievementListItems[itemName].RewardDisplay.text      = reward.ToString();

            if (unlocked)
            {
                SetUnlockedState(itemName);
            }

            AssetReferenceLoader.LoadAssetReferenceAsynchronously <Sprite>(sprite, (returnSprite) =>
            {
                _achievementListItems[itemName].Graphic.sprite = returnSprite;
                achievementItemGameObject.RemoveClassFromObject();

                if (sprite.Asset)
                {
                    AssetReferenceLoader.UnloadAssetReference(sprite);               //TODO: cant unload sprites in use
                }
            });
        }