private Field GetField(CustomWidth customWidth)
        {
            if (customWidth == null)
            {
                return(null);
            }
            RuleBase rule = customWidth.GetRule();

            if (rule == null)
            {
                return(null);
            }
            return(rule.GetField());
        }
        private Field GetField(CustomColor customColor)
        {
            if (customColor == null)
            {
                return(null);
            }
            RuleBase rule = customColor.GetRule();

            if (rule == null)
            {
                return(null);
            }
            return(rule.GetField());
        }
        private Field GetField(PredefinedSymbol predefinedSymbol)
        {
            if (predefinedSymbol == null)
            {
                return(null);
            }
            RuleBase rule = predefinedSymbol.GetRule();

            if (rule == null)
            {
                return(null);
            }
            return(rule.GetField());
        }