code: protected Object readResolve() throws ObjectStreamException {
          try {
              Class<?> proxyClass = getProxyClass();
              Object instance = proxyClass.newInstance();
              ProxyFactory.setInvocationHandlerStatic(instance, handler);
              return instance;
          } catch (InstantiationException e) {
              throw new RuntimeException(e);
          } catch (IllegalAccessException e) {
              throw new RuntimeException(e);
          } catch (ClassNotFoundException e) {
              throw new RuntimeException(e);
          }
      }
docs: Resolve the serialized proxy to a real instance.
  
  @return the resolved instance
  @throws ObjectStreamException if an error occurs