private CTFontCollection getFontCollection(ThemeDocument themeDocument, Enum asciiTheme) {
    CTFontScheme fontScheme = themeDocument.getTheme().getThemeElements().getFontScheme();
    if (fontScheme != null) {

      if (asciiTheme.equals(STTheme.MINOR_ASCII)
          || asciiTheme.equals(STTheme.MINOR_BIDI)
          || asciiTheme.equals(STTheme.MINOR_EAST_ASIA)
          || asciiTheme.equals(STTheme.MINOR_H_ANSI)) {
        return fontScheme.getMinorFont();
      }
      return fontScheme.getMajorFont();
    }
    return null;
  }
 private String getDefaultFontFamily(Enum asciiTheme) {
   if (asciiTheme.equals(STTheme.MINOR_H_ANSI)) {
     return "Calibri";
   }
   return null;
 }