Bloom.Book.BookStorage.RemoveBookThumbnail C# (CSharp) Method

        public bool RemoveBookThumbnail(string fileName)
        {
            string path = Path.Combine(_folderPath, fileName);
            if(RobustFile.Exists(path) &&
             (new System.IO.FileInfo(path).IsReadOnly)) //readonly is good when you've put in a custom thumbnail
            {
                return false;
            }
            if (RobustFile.Exists(path))
            {
                RobustFile.Delete(path);
            }
            return true;
        }