checkNotNull(key);
    checkNotNull(value);
    clearCache();
    return backingMap.put(key, value);
  }

  @CanIgnoreReturnValue
  final @Nullable V remove(Object key) {
    checkNotNull(key);
    clearCache();
    return backingMap.remove(key);
  }

  final void clear() {
    clearCache();
    backingMap.clear();
  }

  @Nullable V get(Object key) {
    checkNotNull(key);

  }

  @Override
  public Spliterator<E> spliterator() {
    return delegate.spliterator();
  }

  @Override
  public boolean remove(@Nullable Object o) {
    assertTrue(Thread.holdsLock(mutex));
    return super.remove(o);
  }

  @Override
  public boolean removeAll(Collection<?> c) {
    assertTrue(Thread.holdsLock(mutex));
    return super.removeAll(c);
  }

## Only the expiry part of rules should get removed as part if replication of removal from
## other site
id=$(./mc ilm rule list siteb/bucket --json | jq '.config.Rules[] | select(.Expiration.Days==3) | .ID' | sed 's/"//g')
# Remove rule from siteb
./mc ilm rule remove --id "${id}" siteb/bucket
sleep 30s # allow to replicate

                
                // Schedule next retry or remove
                handleFailure(channel, e);
            }
        });
    }
    
    private void removeChannel(ChannelInfo channel) {
        log.info("Removing failed channel {} after max retries", channel.getChannelId());
        
        manager.removeChannel(channel);
        failoverStates.remove(channel.getChannelId());
        

    String[] strings = this.strings;
    for (int i = 0; i < reps; i++) {
      for (int j = 0; j < capacity; j++) {
        queue.add(strings[j]);
      }
      for (int j = 0; j < capacity; j++) {
        queue.remove();
      }
    }
  }

        delimiters = settings.get("delimiters", NGramSynonymTokenizer.DEFAULT_DELIMITERS);
        expand = settings.getAsBoolean("expand", true);

        settings.getAsBoolean("expand_ngram", false); // TODO remove

        synonymLoader = new SynonymLoader(env, settings, expand, SynonymLoader.getAnalyzer(ignoreCase));
        if (synonymLoader.getSynonymMap() == null) {
            if (settings.getAsList("synonyms", null) != null) {

			echo "failed to download https://github.com/minio/mc"
			purge "${MC_BUILD_DIR}"
			exit 1
		fi

		(cd "${MC_BUILD_DIR}" && go build -o "$C_PWD/mc")

		# remove mc source.
		purge "${MC_BUILD_DIR}"
	fi

	"${MINIO[@]}" --address ":$start_port" "${WORK_DIR}/disk{1...4}" >"${WORK_DIR}/server1.log" 2>&1 &
	pid=$!
	disown $pid
	sleep 5

    Iterator<String> iterator = iterable.iterator();
    assertTrue(iterator.hasNext());
    assertEquals("a", iterator.next());
    assertThrows(UnsupportedOperationException.class, () -> iterator.remove());
    assertFalse(iterator.hasNext());
    assertThrows(NoSuchElementException.class, () -> iterator.next());
    assertThrows(IllegalStateException.class, () -> iterable.iterator());
  }

    sub.remove(Range.closed(7, 9));
    assertEquals(
        ImmutableMap.of(Range.closedOpen(5, 7), 1, Range.openClosed(9, 10), 2),
        sub.asMapOfRanges());
    assertEquals(
        ImmutableMap.of(Range.open(3, 7), 1, Range.openClosed(9, 10), 2, Range.closed(12, 16), 3),
        rangeMap.asMapOfRanges());

    sub.remove(Range.closed(3, 9));

            } else {
                // Remove failed handle
                handles.remove(path);
                guidToHandle.remove(info.createGuid);
                removePersistedHandle(info);
            }
        }
    }
    
    public void releaseHandle(String path) {
        HandleInfo info = handles.remove(path);
        if (info != null) {
            guidToHandle.remove(info.createGuid);