int dummy = 0;
    for (int i = 0; i < reps; i++) {
      dummy ^= JOINER_ON_STRING.join(components).length();
    }
    return dummy;
  }

  /** {@link Joiner} with a character delimiter. */
  @Benchmark
  int joinerWithCharacterDelimiter(int reps) {
    int dummy = 0;
    for (int i = 0; i < reps; i++) {
      dummy ^= JOINER_ON_CHARACTER.join(components).length();
    }
    return dummy;
  }

  /**

import org.jspecify.annotations.Nullable;

/**
 * To be implemented by test generators of things that can contain elements. Such things include
 * both {@link Collection} and {@link Map}; since there isn't an established collective noun that
 * encompasses both of these, 'container' is used.
 *
 * @author George van den Driessche
 */
@GwtCompatible
@NullMarked
public interface TestContainerGenerator<T, E extends @Nullable Object> {

	pkgpath = ""
	for element := range strings.SplitSeq(finalPkgpath, string(filepath.Separator)) {
		if debug {
			log.Printf("copying %s", pkgpath)
		}
		pkgpath = filepath.Join(pkgpath, element)
		dst := filepath.Join(dstbase, pkgpath)
		src := filepath.Join(cwd, pkgpath)
		if err := copyLocalDir(dst, src); err != nil {
			return "", err
		}
	}

	if underGoRoot {
		// Copy timezone file.
		//

					Tables: []clause.Table{{Name: "users"}},
					Joins: []clause.Join{
						{
							Type:  clause.InnerJoin,
							Table: clause.Table{Name: "articles"},
							ON: clause.Where{
								[]clause.Expression{clause.Eq{clause.Column{Table: "articles", Name: "id"}, clause.PrimaryColumn}},
							},
						},
					},
				},
			},
			"SELECT * FROM `users` INNER JOIN `articles` ON `articles`.`id` = `users`.`id`", nil,
		},
		{

    return join(partsList);
  }

  /**
   * Returns a string containing the string representation of each argument, using the previously
   * configured separator between each.
   */
  public final String join(
      @Nullable Object first, @Nullable Object second, @Nullable Object... rest) {
    return join(iterable(first, second, rest));
  }

  /**

		return 0, err
	}
	var deviceCwd string
	if isStd {
		// Note that we use path.Join here instead of filepath.Join:
		// The device paths should be slash-separated even if the go_android_exec
		// wrapper itself is compiled for Windows.
		deviceCwd = path.Join(deviceGoroot, "src", importPath)
	} else {
		deviceCwd = path.Join(deviceGopath, "src", importPath)
		if modDir != "" {

	}

	joinTable := ns.JoinTableName("user_languages")
	if joinTable != "public.user_languages" {
		t.Errorf("invalid join table generated, got %v", joinTable)
	}

	joinTable2 := ns.JoinTableName("UserLanguage")
	if joinTable2 != "public.user_language" {
		t.Errorf("invalid join table generated, got %v", joinTable2)
	}

	tableName := ns.TableName("Company")
	if tableName != "public.company" {

    }

    assertThat(map.toString()).isEqualTo("{" + JOINER.join(map.entrySet()) + "}");
    assertThat(map.entrySet().toString()).isEqualTo("[" + JOINER.join(map.entrySet()) + "]");
    assertThat(map.keySet().toString()).isEqualTo("[" + JOINER.join(map.keySet()) + "]");
    assertThat(map.values().toString()).isEqualTo("[" + JOINER.join(map.values()) + "]");

    assertEquals(MinimalSet.from(map.entrySet()), map.entrySet());

	}

	for _, join := range from.Joins {
		builder.WriteByte(' ')
		join.Build(builder)
	}
}

// MergeClause merge from clause
func (from From) MergeClause(clause *Clause) {
	clause.Expression = from

	if labels[ll-1] == "." {
		return strings.Join(labels[:ll-1], ".") + "."
	}
	return dns.Fqdn(strings.Join(labels, "."))
}

// msgUnPath converts a etcd path to domainName.
func msgUnPath(s string) string {
	ks := strings.Split(strings.Trim(s, etcdPathSeparator), etcdPathSeparator)
	for i, j := 0, len(ks)-1; i < j; i, j = i+1, j-1 {
		ks[i], ks[j] = ks[j], ks[i]
	}
	return strings.Join(ks, ".")