public static void AddDiscriminatorCondition(
            this MappingFragment entityTypeMapppingFragment,
            EdmProperty discriminatorColumn,
            object value)
        {
            DebugCheck.NotNull(entityTypeMapppingFragment);
            DebugCheck.NotNull(discriminatorColumn);
            DebugCheck.NotNull(value);

            entityTypeMapppingFragment
                .AddConditionProperty(
                    new ConditionPropertyMapping(null, discriminatorColumn, value, null));
        }
        public static void AddNullabilityCondition(
            this MappingFragment entityTypeMapppingFragment,
            EdmProperty column,
            bool isNull)
        {
            DebugCheck.NotNull(entityTypeMapppingFragment);
            DebugCheck.NotNull(column);

            entityTypeMapppingFragment
                .AddConditionProperty(
                    new ConditionPropertyMapping(null, column, null, isNull));
        }