code: private String getVersion(String clazz, ITestContext context) {
          return (String) context.getAttribute(clazz + "Version");
      }
docs: Obtains the version of the current test suite being executed. If no
  version was set, null will be returned
  
  @param clazz   - the test suite class, used for making threadsafe storage of
  application, allowing suites to have independent applications
  under test, run at the same time
  @param context - the TestNG context associated with the test suite, used for
  storing app url information
  @return String: the version of the current test being executed