@Test
void testUnquoteOnly() {

    assertEquals("abc", QuotedStringTokenizer.unquoteOnly("abc"));
    assertEquals("a\"c", QuotedStringTokenizer.unquoteOnly("\"a\\\"c\""));
    assertEquals("a'c", QuotedStringTokenizer.unquoteOnly("\"a'c\""));
    assertEquals("a\\n\\r\\t", QuotedStringTokenizer.unquoteOnly("\"a\\\\n\\\\r\\\\t\""));
    assertEquals("ba\\uXXXXaaa", QuotedStringTokenizer.unquoteOnly("\"ba\\\\uXXXXaaa\""));
}