public static string Export(PokemonData pm)
        {
            var sb = new StringBuilder();

            Xxporter.Export(sb, pm);
            return(sb.ToString());
        }
        public static string Export(IEnumerable <PokemonData> pms)
        {
            var  sb    = new StringBuilder();
            bool first = true;

            foreach (var pm in pms)
            {
                if (first)
                {
                    first = false;
                }
                else
                {
                    sb.AppendLine();
                    sb.AppendLine();
                }
                Xxporter.Export(sb, pm);
            }
            return(sb.ToString());
        }