static AutomatedTestAssignment FindOrCreateAutomatedTestAssignment(RestClient client, Root root, Package executionPackage, AutomatedTest automatedTest)
        {
            if (automatedTest.Id == null) throw new ArgumentException("automatedTest");

            AutomatedTestAssignment automatedTestAssignment = client.GetAutomatedTestAssignmentByPackageAndTestId(root, executionPackage.Id, automatedTest.Id.Value) ??
                                                              client.CreateAutomatedTestAssignmentInPackageId(root, executionPackage.Id, automatedTest.Id.Value);

            return automatedTestAssignment;
        }