Dav: add some documentation on classes

src/Bundle/ChillDocStoreBundle/Security/Guard/DavOnUrlTokenExtractor.php

@@ -15,6 +15,14 @@ use Lexik\Bundle\JWTAuthenticationBundle\TokenExtractor\TokenExtractorInterface;
 use Psr\Log\LoggerInterface;
 use Symfony\Component\HttpFoundation\Request;
 
+/**
+ * Extract the JWT Token from the segment of the dav endpoints.
+ *
+ * A segment is a separation inside the string, using the character "/".
+ *
+ * For recognizing the JWT, the first segment must be "dav", and the second one must be
+ * the JWT endpoint.
+ */
 final readonly class DavOnUrlTokenExtractor implements TokenExtractorInterface
 {
     public function __construct(