docs: public Waiter<GetInvalidationRequest> invalidationCompleted() {
  
          return new WaiterBuilder<GetInvalidationRequest, GetInvalidationResult>().withSdkFunction(new GetInvalidationFunction(client))
                  .withAcceptors(new InvalidationCompleted.IsCompletedMatcher())
                  .withDefaultPollingStrategy(new PollingStrategy(new MaxAttemptsRetryStrategy(30), new FixedDelayStrategy(20)))
                  .withExecutorService(executorService).build();
      }