if (title == null) {
            return StringUtil.EMPTY; // empty
        }

        final int[] spaceChars = getSpaceChars();
        try (final Reader reader = new StringReader(title)) {
            return TextUtil.normalizeText(reader).initialCapacity(title.length()).spaceChars(spaceChars).execute();
        } catch (final IOException e) {
            return StringUtil.EMPTY; // empty
        }
    }

    }

    public void setMaxSymbolTermSize(final int maxSymbolTermSize) {
        this.maxSymbolTermSize = maxSymbolTermSize;
    }

    public void setSpaceChars(final int[] spaceChars) {
        this.spaceChars = spaceChars;
    }

    public void setTikaConfig(final TikaConfig tikaConfig) {
        this.tikaConfig = tikaConfig;
    }