public void UniversalOrbitMap_NumberOfOrbits_PartAExample1()
        {
            // Arrange
            string map = "A)B" + Environment.NewLine +
                         "B)C" + Environment.NewLine +
                         "C)D" + Environment.NewLine +
                         "COM)A";

            _universalOrbitMap.UpdateFromString(map);

            // Act
            int numberOfOrbits = _universalOrbitMap.NumberOfOrbits;

            // Assert
            Assert.AreEqual(10, numberOfOrbits);
        }