});
        return resultBuf.toString();
    }

    protected void addScoreBooster(final ScoreBooster scoreBooster) {
        scoreBoosterList.add(scoreBooster);
        scoreBoosterList.sort((b1, b2) -> b2.getPriority() - b1.getPriority());
    }

    }

    public void test_toLineString() {
        assertEquals("a1,a2,a3=>b1,b2,b3",
                new SynonymItem(1, new String[] { "a1", "a2", "a3" }, new String[] { "b1", "b2", "b3" }).toLineString());
        assertEquals("a=>b", new SynonymItem(1, new String[] { "a" }, new String[] { "b" }).toLineString());

        final byte b0 = DECODE_TABLE[inData.charAt(inIndex)];
        final byte b1 = DECODE_TABLE[inData.charAt(inIndex + 1)];
        final byte b2 = DECODE_TABLE[inData.charAt(inIndex + 2)];
        final byte b3 = DECODE_TABLE[inData.charAt(inIndex + 3)];
        outData[outIndex] = (byte) (b0 << 2 & 0xfc | b1 >> 4 & 0x3);
        outData[outIndex + 1] = (byte) (b1 << 4 & 0xf0 | b2 >> 2 & 0xf);

        List<SynonymItem> itemList = new ArrayList<>();
        itemList.add(new SynonymItem(1, new String[] { "a1" }, new String[] { "A1" }));
        itemList.add(new SynonymItem(2, new String[] { "b1", "b2" }, new String[] { "B1" }));
        itemList.add(new SynonymItem(3, new String[] { "c1" }, new String[] { "C1", "C2" }));
        itemList.add(new SynonymItem(4, new String[] { "x1", "X1" }, new String[] { "x1", "X1" }));