public void FullPosition()
        {
            var position = new ServiceDefinitionPosition("source", 3, 14);

            position.ToString().Should().Be("source(3,14)");
        }
        public void SourceNameOnly()
        {
            var position = new ServiceDefinitionPosition("source");

            position.ToString().Should().Be("source");
        }
        public void LineNumberOnly()
        {
            var position = new ServiceDefinitionPosition("source", 3);

            position.ToString().Should().Be("source(3)");
        }