/// <summary>
        /// Speichert einen Planeten.
        /// </summary>
        /// <param name="universeGuid">Guid des Universums</param>
        /// <param name="planet">Zu speichernder Planet</param>
        public void SavePlanet(Guid universeGuid, IPlanet planet)
        {
            string path = Path.Combine(GetRoot(), universeGuid.ToString(), planet.Id.ToString());

            Directory.CreateDirectory(path);

            string generatorInfo = Path.Combine(path, PlanetGeneratorInfo);

            using (Stream stream = File.Open(generatorInfo, FileMode.Create, FileAccess.Write))
            {
                using (BinaryWriter bw = new BinaryWriter(stream))
                {
                    bw.Write(planet.Generator.GetType().FullName);
                }
            }

            string file = Path.Combine(path, PlanetFilename);

            using (Stream stream = File.Open(file, FileMode.Create, FileAccess.Write))
            {
                using (GZipStream zip = new GZipStream(stream, CompressionMode.Compress))
                {
                    planet.Serialize(zip);
                }
            }
        }
        /// <summary>
        /// Speichert einen Planeten.
        /// </summary>
        /// <param name="universeGuid">Guid des Universums</param>
        /// <param name="planet">Zu speichernder Planet</param>
        public void SavePlanet(Guid universeGuid, IPlanet planet)
        {
            string path = Path.Combine(GetRoot(), universeGuid.ToString(), planet.Id.ToString());
            Directory.CreateDirectory(path);

            string generatorInfo = Path.Combine(path, PlanetGeneratorInfo);
            using (Stream stream = File.Open(generatorInfo, FileMode.Create, FileAccess.Write))
            {
                using (BinaryWriter bw = new BinaryWriter(stream))
                {
                    bw.Write(planet.Generator.GetType().FullName);
                }
            }

            string file = Path.Combine(path, PlanetFilename);
            using (Stream stream = File.Open(file, FileMode.Create, FileAccess.Write))
            {
                using (GZipStream zip = new GZipStream(stream, CompressionMode.Compress))
                {
                    planet.Serialize(zip);
                }
            }
        }