int size = getNumElements();

    assertThrows(
        NullPointerException.class, () -> multimap().putAll(k3(), newArrayList(null, v3())));

    /*
     * In principle, a Multimap implementation could add e3 first before failing on the null. But
     * that seems unlikely enough to be worth complicating the test over, especially if there's any
     * chance that a permissive test could mask a bug.
     */
    expectUnchanged();

          push(stack, collector.combiner().apply(left, right));
        }
        return pop(stack);
      }

      <E extends @Nullable Object> void push(List<E> stack, E value) {
        stack.add(value);
      }

      <E extends @Nullable Object> E pop(List<E> stack) {
        return stack.remove(stack.size() - 1);
      }
    };

### Model for Output Response Data { #model-for-output-response-data }

If you interact with the docs and check the response, even though the code didn't add anything in one of the `description` fields, the JSON response contains the default value (`null`):

<div class="screenshot">
<img src="/img/tutorial/separate-openapi-schemas/image02.png">
</div>

		lg = log.Info{Entry: e, NodeName: sys.nodeName}
	case string:
		lg = log.Info{ConsoleMsg: e, NodeName: sys.nodeName}
	}
	atomic.AddInt64(&sys.totalMessages, 1)

	sys.pubsub.Publish(lg)
	sys.Lock()
	// add log to ring buffer
	sys.logBuf.Value = lg
	sys.logBuf = sys.logBuf.Next()
	sys.Unlock()
	err := sys.console.Send(entry)
	if err != nil {
		atomic.AddInt64(&sys.failedMessages, 1)
	}
	return err

### Building a hotfix binary and container

To add a hotfix tag to the binary version and embed the relevant `commit-id` following build helpers are available

#### Builds the hotfix binary and uploads to https;//dl.min.io

```

                    if (currentDirective == null) {
                        currentDirective = new Directive(userAgent);
                        robotsTxt.addDirective(currentDirective);
                        currentDirectiveList.add(currentDirective);
                    }
                } else {
                    isGroupRecordStarted = true;
                    value = getValue(DISALLOW_RECORD, line);
                    if (value != null) {

		return ErrAdminConfigIDPCfgNameAlreadyExists
	}
	if len(cfgInfos) == 0 && isUpdate {
		return ErrAdminConfigIDPCfgNameDoesNotExist
	}
	return ErrNone
}

// AddIdentityProviderCfg: adds a new IDP config for openid/ldap.
//
// PUT <admin-prefix>/idp-cfg/openid/dex1 -> create named config `dex1`
//
// PUT <admin-prefix>/idp-cfg/openid/_ -> create (default) named config `_`

   */
  public static List<Throwable> getCausalChain(Throwable throwable) {
    checkNotNull(throwable);
    List<Throwable> causes = new ArrayList<>(4);
    causes.add(throwable);

    // Keep a second pointer that slowly walks the causal chain. If the fast pointer ever catches
    // the slower pointer, then there's a loop.
    Throwable slowPointer = throwable;

          new UncaughtExceptionHandler() {
            @Override
            public void uncaughtException(Thread t, Throwable e) {
              exceptions.add(e);
            }
          });
      threads.add(thread);
    }
    for (Thread t : threads) {
      t.start();
    }
    for (Thread t : threads) {
      Uninterruptibles.joinUninterruptibly(t);
    }

MINIO_IDENTITY_OPENID_REDIRECT_URI_DYNAMIC  (on|off)    Enable 'Host' header based dynamic redirect URI (default: 'off')
MINIO_IDENTITY_OPENID_COMMENT               (sentence)  optionally add a comment to this setting
```

### Access Control Configuration Variables