void RemoveStyleSheetsFromRootAsset(VisualElementAsset rootAsset)
        {
            if (rootAsset.fullTypeName == BuilderConstants.SelectedVisualTreeAssetSpecialElementTypeName)
            {
                return;
            }

            for (int i = 0; i < m_OpenUSSFiles.Count; ++i)
            {
                var localUssPath = m_OpenUSSFiles[i].assetPath;

                if (string.IsNullOrEmpty(localUssPath))
                {
                    continue;
                }

                rootAsset.RemoveStyleSheet(m_OpenUSSFiles[i].styleSheet);
                rootAsset.RemoveStyleSheetPath(localUssPath);
            }
        }