public void Sort_ShouldSortContent()
        {
            // Arrange
            var obj = new MessageLines
            {
                { "-x", "any-text" },
                { "--a", "any-other-text" },
                { "d", "any-other-text-374573" },
                { "---c", "any-other-text-2" },
            };

            // Act
            obj.Sort();

            // Assert
            Assert.AreEqual(4, obj.Count());
            Assert.AreEqual("--a", obj.ElementAt(0).Key);
            Assert.AreEqual("any-other-text", obj.ElementAt(0).Value);
            Assert.AreEqual("---c", obj.ElementAt(1).Key);
            Assert.AreEqual("any-other-text-2", obj.ElementAt(1).Value);
            Assert.AreEqual("d", obj.ElementAt(2).Key);
            Assert.AreEqual("any-other-text-374573", obj.ElementAt(2).Value);
            Assert.AreEqual("-x", obj.ElementAt(3).Key);
            Assert.AreEqual("any-text", obj.ElementAt(3).Value);
        }