Inheritance: ITestsService
 public TestServiceManager(
     MsTestService msTest,
     NUnitXmlTestService nunit,
     XUnitTestService xunit)
 {
     _services = new List <ITestsService>
     {
         msTest,
         nunit,
         xunit
     }.ToDictionary(s => s.FrameWorkName);
 }
        public TestServiceManager(
            MsTestService msTest,
            NUnitXmlTestService nunit,
            XUnitTestService xunit)
        {
            _services = new List<ITestsService>
                        {
                            msTest,
                            nunit,
                            xunit
                        }.ToDictionary(s => s.FrameWorkName);

        }