async loadMissingFonts () {
    let fontNames: FontName[];
    if (FigmaUtils.isMixedValue(this.baseNode.fontName)) {
        fontNames = Array.from(this.baseNode.characters).reduce(
            (p, _, i) => {
                // as FontName - for single character the is no possibility to have multiple font families set
                const characterFontName = this.baseNode.getRangeFontName(i, i+1) as FontName;
                const fontAlreadyInArray = p.find(
                    fontName => fontName.family === characterFontName.family &&
                    fontName.style === characterFontName.style
                );
                if (!fontAlreadyInArray) {
                    p.push(characterFontName);
                }
                return p;
            },
            [] as FontName[]
        );
    } else {
        fontNames = [this.baseNode.fontName];
    }

    const loadFontResults = await Promise.all(fontNames.map(
        fontName => figma.loadFontAsync(fontName)
            .catch(e => {
                figma.notify(e);
                return false;
            })
    ));
    
    return !loadFontResults.includes(false); // return false if any font loading have failed
}