NuGet.Settings.GetNestedValues C# (CSharp) Method

        public IList<KeyValuePair<string, string>> GetNestedValues(string section, string key)
        {
            if (String.IsNullOrEmpty(section))
            {
                throw new ArgumentException(CommonResources.Argument_Cannot_Be_Null_Or_Empty, "section");
            }

            if (String.IsNullOrEmpty(key))
            {
                throw new ArgumentException(CommonResources.Argument_Cannot_Be_Null_Or_Empty, "key");
            }

            var sectionElement = GetSection(_config.Root, section);
            if (sectionElement == null)
            {
                return EmptyList();
            }
            var subSection = GetSection(sectionElement, key);
            if (subSection == null)
            {
                return EmptyList();
            }

            return subSection.Elements("add")
                             .Select(ReadValue)
                             .ToList()
                             .AsReadOnly();
        }