public static Class<?> getRawType(Type type)
{
      ...
      else if (type instanceof WildcardType)
      {
          WildcardType wildcardType = (WildcardType) type;
          Type[] upperBounds = wildcardType.getUpperBounds();
          if (upperBounds != null && upperBounds.length > 0) {
              return getRawType(upperBounds[0]);
          }
      }
      throw new RuntimeException(Messages.MESSAGES.unableToDetermineBaseClass());
   }
}