return protwordsService.getProtwordsFile(form.dictId)
                .map(file -> asStream(new File(file.getPath()).getName()).contentTypeOctetStream().stream(out -> {
                    file.writeOut(out);
                }))
                .orElseGet(() -> {
                    throwValidationError(messages -> messages.addErrorsFailedToDownloadProtwordsFile(GLOBAL),

        return kuromojiService.getKuromojiFile(form.dictId)
                .map(file -> asStream(new File(file.getPath()).getName()).contentTypeOctetStream().stream(out -> {
                    file.writeOut(out);
                }))
                .orElseGet(() -> {
                    throwValidationError(messages -> messages.addErrorsFailedToDownloadKuromojiFile(GLOBAL),

      try {
        output.writeShort(v);
      } catch (IOException impossible) {
        throw new AssertionError(impossible);
      }
    }

    @Override
    public void writeUTF(String s) {
      try {
        output.writeUTF(s);
      } catch (IOException impossible) {
        throw new AssertionError(impossible);
      }
    }

    @Override
    public byte[] toByteArray() {

        return stemmerOverrideService.getStemmerOverrideFile(form.dictId)
                .map(file -> asStream(new File(file.getPath()).getName()).contentTypeOctetStream().stream(out -> {
                    file.writeOut(out);
                }))
                .orElseGet(() -> {
                    throwValidationError(messages -> messages.addErrorsFailedToDownloadStemmeroverrideFile(GLOBAL),

            b[j] = (byte) (c[i] >>> 8);
            j++;
            b[j++] = (byte) (c[i] >>> 0);
        }
        write(b, 0, blen);
    }

    @Override
    public final void writeUTF(final String str) throws SmbException {
        final int len = str.length();
        int ch, size = 0;
        byte[] dst;

        for (int i = 0; i < len; i++) {
            ch = str.charAt(i);

        return synonymService.getSynonymFile(form.dictId)
                .map(file -> asStream(new File(file.getPath()).getName()).contentTypeOctetStream().stream(out -> {
                    file.writeOut(out);
                }))
                .orElseGet(() -> {
                    throwValidationError(messages -> messages.addErrorsFailedToDownloadSynonymFile(GLOBAL),