/// <summary>
        /// Reads <c>ulong</c> from the stream.
        /// </summary>
        public unsafe ulong ReadUlong()
        {
            if (blockRemaining > 8)
            {
                position       += 8;
                blockRemaining -= 8;
                return(BaseReader.ReadUlong());
            }
            else
            {
                ulong value;

                ReadBytes((byte *)&value, 8);
                return(value);
            }
        }
        /// <summary>
        /// Reads <c>ulong</c> from the stream.
        /// </summary>
        public ulong ReadUlong()
        {
            byte[] buffer = MoveInternal(8);
            ulong  value;

            if (buffer != null)
            {
                value = BitConverter.ToUInt64(buffer, 0);
            }
            else
            {
                value = BaseReader.ReadUlong();
            }
            CheckMoveReader();
            return(value);
        }