Bugfix: resource can be an empty string

Author: tvdijen

src/SAML11/XML/saml/AbstractAuthorizationDecisionStatementType.php

@@ -6,13 +6,14 @@
 
 use DOMElement;
 use SimpleSAML\Assert\Assert;
-use SimpleSAML\SAML11\Type\{AnyURIValue, StringValue};
+use SimpleSAML\SAML11\Type\StringValue;
 use SimpleSAML\XML\Exception\{
     InvalidDOMElementException,
     MissingElementException,
     SchemaViolationException,
     TooManyElementsException,
 };
+use SimpleSAML\XML\Type\AnyURIValue;
 
 use function strval;
 
@@ -34,6 +35,7 @@ abstract class AbstractAuthorizationDecisionStatementType extends AbstractSubjec
      */
     final public function __construct(
         Subject $subject,
+        // Uses the base AnyURIValue because the specification allows for this attribute to be empty
         protected AnyURIValue $resource,
         protected DecisionTypeEnum $decision,
         protected array $action = [],