private boolean customClassHasFields(CustomClass customClass) {
        for (CustomStyle style : customClass.getStyles()) {
            if (customStyleHasFields(style)) {
                return true;
            }
        }
        
        return false;
    }
Exports skin data to a JSON file to be loaded by libGDX.
@param fileHandle
@return
core/src/com/ray3k/skincomposer/data/JsonData.java