docs: public static String render(Object o) {
          if (o == null) {
              return String.valueOf(o);
          }
          Class<?> objectClass = o.getClass();
  
          if (unrenderableClasses.containsKey(objectClass) == false) {
              try {
                  if (objectClass.isArray()) {
                      return renderArray(o, objectClass).toString();
                  } else {
                      return o.toString();
                  }
              } catch (Exception e) {
                  Long now = new Long(System.currentTimeMillis());
  
                  System.err.println("Disabling exception throwing class " + objectClass.getName() + ", " + e.getMessage());
  
                  unrenderableClasses.put(objectClass, now);
              }
          }
          String name = o.getClass().getName();
          return name + "@" + Integer.toHexString(o.hashCode());
      }