checkArgument(values.hasNext(), "Cannot take mean of 0 values");
    long count = 1;
    double mean = checkFinite(values.next().doubleValue());
    while (values.hasNext()) {
      double value = checkFinite(values.next().doubleValue());
      count++;
      // Art of Computer Programming vol. 2, Knuth, 4.2.2, (15)
      mean += (value - mean) / count;
    }
    return mean;
  }

        Iterator<V> valueItr = valueIterators.get(key);
        if (valueItr == null) {
          valueIterators.put(key, valueItr = sampleValuesIterator());
        }
        entries[i] = mapEntry(key, valueItr.next());
      }
      return multimapGenerator.create((Object[]) entries).keys();
    }

    private Iterator<V> sampleValuesIterator() {

        if (graphResult.hasErrors()) {
            return addExceptionToResult(
                    result, graphResult.getProblems().iterator().next().getException());
        }

        try {
            session.setProjectMap(getProjectMap(session.getProjects()));
        } catch (DuplicateProjectException e) {
            return addExceptionToResult(result, e);

        set(Calendar.SECOND, second)
        set(Calendar.MILLISECOND, 0)
        return timeInMillis
      }
    }

    /**
     * Returns the index of the next date character in `input`, or if `invert` the index
     * of the next non-date character in `input`.
     */
    private fun dateCharacterOffset(
      input: String,
      pos: Int,
      limit: Int,
      invert: Boolean,
    ): Int {

		}
		if diskIndex != 0 && disk == nil {
			t.Errorf("Drive erroneously filtered, driveIndex: %d", diskIndex)
		}
	}
	partsMetadata[0] = partsMetadataBackup // Revert before going to the next test

	// Test 3: Not synchronized DataDir
	erasureDisks = s.getDisks()
	partsMetadataBackup = partsMetadata[1]
	partsMetadata[1].DataDir = "foo-random"

	errs = make([]error, len(erasureDisks))

    Multimap<String, Integer> mod = HashMultimap.create();
    Multimap<String, Integer> unmod = Multimaps.unmodifiableMultimap(mod);
    mod.put("foo", 1);
    Entry<String, Integer> fromIterator = unmod.entries().iterator().next();
    assertThrows(UnsupportedOperationException.class, () -> fromIterator.setValue(2));
    Entry<String, Integer> fromToArray = (Entry<String, Integer>) unmod.entries().toArray()[0];

        } else {
          assertThat(numSuccessfulSetCalls.get()).isEqualTo(1);
        }
      } else {
        assertThat(numSuccessfulSetCalls.get()).isEqualTo(1);
      }
      // reset for next iteration
      numSuccessfulSetCalls.set(0);
      finalResults.clear();
    }
    executor.shutdown();
  }

  // setFuture and cancel() interact in more complicated ways than the other setters.

    Copy **only** the file with the requirements first, not the rest of the code.

    As this file **doesn't change often**, Docker will detect it and use the **cache** for this step, enabling the cache for the next step too.

4. Install the package dependencies in the requirements file.

    Set<E> edgesConnecting = edgesConnecting(nodeU, nodeV);
    switch (edgesConnecting.size()) {
      case 0:
        return null;
      case 1:
        return edgesConnecting.iterator().next();
      default:
        throw new IllegalArgumentException(String.format(MULTIPLE_EDGES_CONNECTING, nodeU, nodeV));
    }
  }

  @Override
  public @Nullable E edgeConnectingOrNull(EndpointPair<N> endpoints) {

  }

  private static final DiscreteDomain<Integer> UNBOUNDED_DOMAIN =
      new DiscreteDomain<Integer>() {
        @Override
        public Integer next(Integer value) {
          return integers().next(value);
        }

        @Override
        public Integer previous(Integer value) {
          return integers().previous(value);
        }

        @Override