@Test
    public void testGetKeywordOfLine() {
        assertEquals(expansionRangeX, GrammarParser.getKeywordOfLine("expansionRangeX [23, 24]"));
        assertEquals(productionRules, GrammarParser.getKeywordOfLine("productionRules A->a"));
        assertEquals(null, GrammarParser.getKeywordOfLine("hand 23"));
    }