code: private boolean forbidUseOfSuperInFixtureMethod(MethodCallExpression expr) {
      Method currMethod = resources.getCurrentMethod();
      Expression target = expr.getObjectExpression();
  
      if (currMethod instanceof FixtureMethod
          && target instanceof VariableExpression
          && ((VariableExpression)target).isSuperExpression()
          && currMethod.getName().equals(expr.getMethodAsString())) {
        resources.getErrorReporter().error(expr,
            "A base class fixture method should not be called explicitly " +
                "because it is always invoked automatically by the framework");
        return true;
      }
  
      return false;
    }
docs: the base method and doesn't know that it will be run automatically)