PayloadData.cs

using System;
 
namespace OSDP.Net.Model
{
    public abstract class PayloadData
    {
        public abstract byte[] BuildData();
        
        public abstract byte Code { get; }
        
        public virtual bool IsSecurityInitialization => false;

        public abstract ReadOnlySpan<byte> SecurityControlBlock();

        public virtual void CustomMessageUpdate(Span<byte> messageBuffer)
        {
        }
 
    }
}