public static NSelfUnlinkMessage Google(string id)
        {
            var message = new TUnlink {
                Google = id
            };

            return(new NSelfUnlinkMessage(new Envelope {
                Unlink = message
            }));
        }
        public static NSelfUnlinkMessage GameCenter(string id)
        {
            var message = new TUnlink {
                GameCenter = id
            };

            return(new NSelfUnlinkMessage(new Envelope {
                Unlink = message
            }));
        }
        public static NSelfUnlinkMessage Email(string email)
        {
            var message = new TUnlink {
                Email = email
            };

            return(new NSelfUnlinkMessage(new Envelope {
                Unlink = message
            }));
        }
        public static NSelfUnlinkMessage Facebook(string id)
        {
            var message = new TUnlink {
                Facebook = id
            };

            return(new NSelfUnlinkMessage(new Envelope {
                Unlink = message
            }));
        }
        public static NSelfUnlinkMessage Custom(string id)
        {
            var message = new TUnlink {
                Custom = id
            };

            return(new NSelfUnlinkMessage(new Envelope {
                Unlink = message
            }));
        }