public void GetUrl_NullOrEmpty(string attribute)
        {
            var PartBTags = AzMonList.Initialize();

            AzMonList.Add(ref PartBTags, new KeyValuePair <string, object>(attribute, null));

            PartBTags.GenerateUrlAndAuthority(out var url, out var urlAuthority);
            Assert.Null(url);
            Assert.Null(urlAuthority);

            AzMonList.Clear(ref PartBTags);
            AzMonList.Add(ref PartBTags, new KeyValuePair <string, object>(attribute, string.Empty));
            PartBTags.GenerateUrlAndAuthority(out url, out urlAuthority);
            Assert.Null(url);
            Assert.Null(urlAuthority);
        }