Opc.Ua.LiteralOperand.Validate C# (CSharp) Method

        public override ServiceResult Validate(FilterContext context, int index)
        {
            if (m_value.Value == null)
            {
                return ServiceResult.Create(
                    StatusCodes.BadEventFilterInvalid, 
                    "LiteralOperand specifies a null Value.");
            }

            return ServiceResult.Good;
        }