protected static boolean isSingleQuoted(String input) {
        if (input == null || input.isBlank()) {
            return false;
        }
        return input.matches("(^" + QUOTE_CHAR + "{1}([^" + QUOTE_CHAR + "]+)" + QUOTE_CHAR + "{1})");
    }
@Test
    public void testEmptySingleQuotedNegative() {
        assertFalse(isSingleQuoted("\"\""));
    }