Letterhead: Metadata & {
    available: boolean;
    backgroundColor: string;
    bodyColor: string;
    bottomLine: LetterheadLine;
    description?: string | null;
    footer: LetterheadHeaderFooter;
    header: LetterheadHeaderFooter;
    middleLine: LetterheadLine;
    name: string;
    topLine: LetterheadLine;
}

Type declaration