protected static boolean isDoubleQuoted(String input) {
        if (input == null || input.isBlank()) {
            return false;
        }
        return input.matches("(^" + QUOTE_CHAR + "{2}([^" + QUOTE_CHAR + "]+)" + QUOTE_CHAR + "{2})");
    }
@Test
    public void testEmptyDoubleQuotedNegative() {
        assertFalse(isDoubleQuoted("\"\"\"\""));
    }