public entity.Artist Parse(mod.Artist artist)
 {
     entity.Artist a = new entity.Artist();
     a.Name = artist.Name;
     a.Location = artist.Location;
     a.Biography = artist.Biography;
     a.Artiststatement = artist.ArtistStatement;
     if (a.Id == null) {
         a.Id = artist.Id;
     }
     return a;
 }
        public mod.Artist Parse(entity.Artist artist)
        {
            if (artist != null) {
                return new mod.Artist {
                    Name = artist.Name,
                    Biography = artist.Biography,
                    ArtistStatement=artist.Artiststatement,
                    Location=artist.Location,
                    Id = artist.Id

                };
            }
            else return new mod.Artist();
        }