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

  public void testAsMapRemoveImplementsSortedSet() {
    List<K> keys = new ArrayList<>(multimap().keySet());
    for (K key : keys) {
      resetCollection();
      SortedSet<V> valueSet = (SortedSet<V>) multimap().asMap().remove(key);
      assertEquals(multimap().valueComparator(), valueSet.comparator());
    }
  }

  final N node;
  final BaseGraph<N> graph;

  IncidentEdgeSet(BaseGraph<N> graph, N node) {
    this.graph = graph;
    this.node = node;
  }

  @Override
  public boolean remove(@CheckForNull Object o) {
    throw new UnsupportedOperationException();
  }

  @Override
  public int size() {
    if (graph.isDirected()) {
      return graph.inDegree(node)
          + graph.outDegree(node)

            return parent.toArray(a);
        }

        public boolean add(final E e) {
            return parent.add(e);
        }

        public boolean remove(final Object o) {
            return parent.remove(o);
        }

        public boolean containsAll(final Collection<?> c) {
            return parent.containsAll(c);
        }

            return parent.toArray(a);
        }

        public boolean add(final E e) {
            return parent.add(e);
        }

        public boolean remove(final Object o) {
            return parent.remove(o);
        }

        public boolean containsAll(final Collection<?> c) {
            return parent.containsAll(c);
        }

            while (nextEvent.subscribers.hasNext()) {
              nextEvent.subscribers.next().dispatchEvent(nextEvent.event);
            }
          }
        } finally {
          dispatching.remove();
          queue.remove();
        }
      }
    }

    private static final class Event {
      private final Object event;
      private final Iterator<Subscriber> subscribers;

    }

    @Override
    public void putAll(final Map<? extends Object, ? extends Object> t) {
        getProperties().putAll(t);
    }

    @Override
    public Object remove(final Object key) {
        return getProperties().remove(key);
    }

    @Override
    public void save(final OutputStream out, final String comments) {
        throw new UnsupportedOperationException("Unsupported operation.");
    }

      for (int j = 0; j < dataSize; ++j) {
        dataset.addEntries(helper);
      }
      dummy ^= helper.toString().hashCode();
    }
    return dummy;
  }

  // When omitEmptyValues() is released, remove this method and add a new @Param "omitEmptyValues".

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

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

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

	"${MINIO_OLD[@]}" --address ":$start_port" "${WORK_DIR}/xl{1...16}" >"${WORK_DIR}/server1.log" 2>&1 &
	pid=$!
	disown $pid

	"${WORK_DIR}/mc" ready minio/

		nsLk.lockMapMutex.Unlock()

		// To trigger the race:
		// 1) lk3 or lk4 need to advance and increment the ref on the existing resource,
		//    successfully acquiring the lock.
		// 2) lk2 then needs to advance and remove the resource from lockMap.
		// 3) lk3 or lk4 (whichever didn't execute in step 1) then executes and creates
		//    a new entry in lockMap and acquires a lock for the same resource.

		<-lk2ch
		lk3ok := <-lk3ch