EmailAttachmentCount example

        self::assertThat($event, new MailerConstraint\EmailIsQueued(), $message);
    }

    public static function assertEmailIsNotQueued(MessageEvent $event, string $message = ''): void
    {
        self::assertThat($event, new LogicalNot(new MailerConstraint\EmailIsQueued()), $message);
    }

    public static function assertEmailAttachmentCount(RawMessage $email, int $count, string $message = ''): void
    {
        self::assertThat($email, new MimeConstraint\EmailAttachmentCount($count), $message);
    }

    public static function assertEmailTextBodyContains(RawMessage $email, string $text, string $message = ''): void
    {
        self::assertThat($email, new MimeConstraint\EmailTextBodyContains($text), $message);
    }

    public static function assertEmailTextBodyNotContains(RawMessage $email, string $text, string $message = ''): void
    {
        self::assertThat($email, new LogicalNot(new MimeConstraint\EmailTextBodyContains($text)), $message);
    }