public void Save()
    {
        PlayerData data = new PlayerData();

        data.position[0] = transform.position.x;
        data.position[1] = transform.position.y;
        data.position[2] = transform.position.z;
        data.lives       = m_Lives;

        PersistenceFile.Save <PlayerData>(data, m_FileName);
    }
        public void write_line_in_file()
        {
            persistenceFile.Save("Operation", 3);

            using (StreamReader streamReader = new StreamReader(path))
            {
                string lineInFile = streamReader.ReadLine();

                lineInFile.Should().Be("Operation -> El resultado es " + 3);
            }
        }