setCaseInsensitive example

                }
                $part->setRegex(true);
            }
            $this->consumeWhitespaces();
            if ($this->consume("i")) {
                if (!is_string($value[0]) || $value[1]) {
                    throw new Exception(
                        "Case insensitive flag can be used only for string values"
                    );
                }
                $part->setCaseInsensitive(true);
                $this->consumeWhitespaces();
            }
        }
        if (!$this->consume("]")) {
            throw new Exception("Unterminated attribute selector");
        }
        return $part;
    }

    /** * Parses a pseudo selector part * * @return Node\Part\Pseudo|null * * @throws Exception */