* ignored.
   *
   * <p>Despite the method name, this method attempts to avoid actually copying the data when it is
   * safe to do so. The exact circumstances under which a copy will or will not be performed are
   * undocumented and subject to change.
   *
   * @throws NullPointerException if any key or value in {@code multimap} is null
   */
  public static <K, V> ImmutableSetMultimap<K, V> copyOf(

   *
   * <p>Despite the method name, this method attempts to avoid actually copying the data when it is
   * safe to do so. The exact circumstances under which a copy will or will not be performed are
   * undocumented and subject to change.
   *
   * @throws NullPointerException if any key or value in {@code multimap} is null
   */
  public static <K, V> ImmutableMultimap<K, V> copyOf(Multimap<? extends K, ? extends V> multimap) {

   *
   * <p>Despite the method name, this method attempts to avoid actually copying the data when it is
   * safe to do so. The exact circumstances under which a copy will or will not be performed are
   * undocumented and subject to change.
   *
   * @throws IllegalArgumentException if two keys have the same value or two values have the same
   *     key
   * @throws NullPointerException if any key or value in {@code map} is null

   *
   * <p>Despite the method name, this method attempts to avoid actually copying the data when it is
   * safe to do so. The exact circumstances under which a copy will or will not be performed are
   * undocumented and subject to change.
   *
   * <p>Note that if {@code list} is a {@code List<String>}, then {@code ImmutableList.copyOf(list)}

   *
   * <p>Despite the method name, this method attempts to avoid actually copying the data when it is
   * safe to do so. The exact circumstances under which a copy will or will not be performed are
   * undocumented and subject to change.
   *
   * <p>Note that if {@code list} is a {@code List<String>}, then {@code ImmutableList.copyOf(list)}

				"!self.listMap.all(m, has(m.v2) && m.v2 != 'z')":               10,
				"self.listMap.exists_one(m, has(m.v2) && m.v2 == 'z')":         12,
				"self.listMap.filter(m, has(m.v2) && m.v2 == 'z').size() == 1": 24,
				// undocumented overload of map that takes a filter argument. This is the same as .filter().map()
				"self.listMap.map(m, has(m.v2) && m.v2 == 'z', m.v2).size() == 1":           25,

	b.id.Lock()
	id := b.toolIDCache[name]
	b.id.Unlock()

	if id != "" {
		return id
	}

	path := base.Tool(name)
	desc := "go tool " + name

	// Special case: undocumented -vettool overrides usual vet,
	// for testing vet or supplying an alternative analysis tool.
	if name == "vet" && VetTool != "" {
		path = VetTool
		desc = VetTool
	}

	port, needsLookup := parsePort(service)
	if needsLookup {
		switch network {
		case "tcp", "tcp4", "tcp6", "udp", "udp4", "udp6", "ip":
		case "": // a hint wildcard for Go 1.0 undocumented behavior
			network = "ip"
		default:
			return 0, &AddrError{Err: "unknown network", Addr: network}
		}
		port, err = r.lookupPort(ctx, network, service)
		if err != nil {
			return 0, err
		}
	}

   *
   * <p>Despite the method name, this method attempts to avoid actually copying the data when it is
   * safe to do so. The exact circumstances under which a copy will or will not be performed are
   * undocumented and subject to change.
   *
   * @throws NullPointerException if any key or value in {@code map} is null
   */
  public static <K, V> ImmutableMap<K, V> copyOf(Map<? extends K, ? extends V> map) {

	cmd.Flag.BoolVar(&cfg.BuildTrimpath, "trimpath", false, "")
	cmd.Flag.BoolVar(&cfg.BuildWork, "work", false, "")
	cmd.Flag.Var((*buildvcsFlag)(&cfg.BuildBuildvcs), "buildvcs", "")

	// Undocumented, unstable debugging flags.
	cmd.Flag.StringVar(&cfg.DebugActiongraph, "debug-actiongraph", "", "")
	cmd.Flag.StringVar(&cfg.DebugTrace, "debug-trace", "", "")