System.Security.Claims.ClaimsPrincipal.WriteTo C# (CSharp) Method

        protected virtual void WriteTo(BinaryWriter writer, byte[] userData)
        {

            if (writer == null)
            {
                throw new ArgumentNullException(nameof(writer));
            }

            int numberOfPropertiesWritten = 0;
            var mask = SerializationMask.None;
            if (_identities.Count > 0)
            {
                mask |= SerializationMask.HasIdentities;
                numberOfPropertiesWritten++;
            }

            if (userData != null && userData.Length > 0)
            {
                numberOfPropertiesWritten++;
                mask |= SerializationMask.UserData;
            }

            writer.Write((Int32)mask);
            writer.Write((Int32)numberOfPropertiesWritten);
            if ((mask & SerializationMask.HasIdentities) == SerializationMask.HasIdentities)
            {
                writer.Write(_identities.Count);
                foreach (var identity in _identities)
                {
                    identity.WriteTo(writer);
                }
            }

            if ((mask & SerializationMask.UserData) == SerializationMask.UserData)
            {
                writer.Write((Int32)userData.Length);
                writer.Write(userData);
            }

            writer.Flush();
        }