public synchronized void abortTranslation() {
            if (null != this.progressHandler) {
                this.progressHandler.sendEmptyMessage(DisposableHandler.DONE);
            }
            setNotTranslated();
        }
Utility method to get a Translator object that can be used to perform offline translation
@param activity      the calling activity
@param sourceLng     language to translate from
@param unsupportedLngConsumer    returned if the sourceLng is not supported
@param downloadingModelConsumer  returned if language models need to be downloaded, should be used to show a progress UI to the user
@param translatorConsumer        returns the translator object
main/src/main/java/cgeo/geocaching/utils/OfflineTranslateUtils.java