List<RemovalNotification<Object, Object>> notifications = new ArrayList<>();
    RemovalListener<Object, Object> removalListener =
        new RemovalListener<Object, Object>() {
          @Override
          public void onRemoval(RemovalNotification<Object, Object> notification) {
            notifications.add(notification);
          }
        };
    Cache<Object, Object> cache =

          <type>String</type>
          <description>The mechanism used to deliver notifications.</description>
        </field>
        <field>
          <name>sendOnError</name>
          <version>4.0.0+</version>
          <defaultValue>true</defaultValue>
          <type>boolean</type>
          <description>Whether to send notifications on error.</description>
        </field>
        <field>

    startSignal.countDown();

    try {
      doneSignal.await();
    } catch (InterruptedException e) {
      throw new RuntimeException(e);
    }

    map.cleanUp(); // force notifications
    assertThat(listener.isEmpty()).isTrue();
    assertThat(map.containsKey(one)).isTrue();
    assertThat(map).hasSize(1);
    assertThat(map.get(one)).isSameInstanceAs(computedObject);
  }

			cancel()
		}
	}

	domain := globalDomainNames
	services := madmin.Services{
		LDAP:          ldap,
		Logger:        log,
		Audit:         audit,
		Notifications: notifyTarget,
	}
	{
		ctx2, cancel := context.WithTimeout(ctx, operationTimeout)
		services.KMSStatus = fetchKMSStatus(ctx2)
		cancel()
	}

	return madmin.InfoMessage{

          readCount.set(0);
        } finally {
          unlock();
        }
      }
    }

    void runUnlockedCleanup() {
      // locked cleanup may generate notifications we can send unlocked
      if (!isHeldByCurrentThread()) {
        map.processPendingNotifications();
      }
    }
  }

  static class LoadingValueReference<K, V> implements ValueReference<K, V> {

	c.Assert(err, nil)

	// execute the request.
	response, err = s.client.Do(req)
	c.Assert(err, nil)
	verifyError(c, response, "InvalidArgument", "A specified event is not supported for notifications.", http.StatusBadRequest)

	req, err = newTestSignedRequest(http.MethodGet,
		getListenNotificationURL(s.endPoint, bucketName, []string{tooBigPrefix}, []string{}, validEvents),
		0, nil, s.accessKey, s.secretKey, s.signer)