public Optional<SoyMsgBundle> resolve(final Optional<Locale> locale) throws IOException {
        if (!locale.isPresent()) {
            return Optional.absent();
        }

        synchronized (msgBundles) {
            SoyMsgBundle soyMsgBundle = null;
            if (isHotReloadModeOff()) {
                soyMsgBundle = msgBundles.get(locale.get());
            }
            if (soyMsgBundle == null) {
                soyMsgBundle = createSoyMsgBundle(locale.get());
                if (soyMsgBundle == null) {
                    soyMsgBundle = createSoyMsgBundle(new Locale(locale.get().getLanguage()));
                }

                if (soyMsgBundle == null && fallbackToEnglish) {
                    soyMsgBundle = createSoyMsgBundle(Locale.ENGLISH);
                }

                if (soyMsgBundle == null) {
                    return Optional.absent();
                }

                if (isHotReloadModeOff()) {
                    msgBundles.put(locale.get(), soyMsgBundle);
                }
            }

            return Optional.fromNullable(soyMsgBundle);
        }
    }
public Optional < SoyMsgBundle > resolve ( final Optional < Locale > locale ) throws IOException { if ( ! locale . isPresent ( ) ) { return Optional . absent ( ) ; } synchronized ( msgBundles ) { SoyMsgBundle soyMsgBundle = null ; if ( isHotReloadModeOff ( ) ) { soyMsgBundle = msgBundles . get ( locale . get ( ) ) ; } if ( soyMsgBundle == null ) { soyMsgBundle = createSoyMsgBundle ( locale . get ( ) ) ; if ( soyMsgBundle == null ) { soyMsgBundle = createSoyMsgBundle ( new Locale ( locale . get ( ) . getLanguage ( ) ) ) ; } if ( soyMsgBundle == null && fallbackToEnglish ) { soyMsgBundle = createSoyMsgBundle ( Locale . ENGLISH ) ; } if ( soyMsgBundle == null ) { return Optional . absent ( ) ; } if ( isHotReloadModeOff ( ) ) { msgBundles . put ( locale . get ( ) , soyMsgBundle ) ; } } return Optional . fromNullable ( soyMsgBundle ) ; } }
Based on a provided locale return a SoyMsgBundle file.

If a passed in locale object is "Optional.absent()",
the implementation will return Optional.absent() as well
@param locale - maybe locale
@return maybe soy msg bundle