def help_invocation_for_command(prefix, command, locale):
    """
    Get the help command invocation for a command.

    Parameters
    ----------
    prefix: str
        The command prefix to show.
    command: senko.Command
        The command to get the help invocation for.
    locale: senko.Locale
        The locale to get the help invocation for.

    Returns
    -------
    str
        The help invocation for the given command in the
        given locale.
    """
    command_name = command.get_qualified_name(locale)
    help_name = locale("#command_help_name")
    return f"{prefix}{help_name} {command_name}"