Add dummy extra method with return type AttackResult because every …

…assignment needs at least one such mapping (in the challenges case this is optional but since the challenges are an extra thing and this is the only assignment which has no such method adding a dummy method makes sense)

webgoat-lessons/challenge/src/main/java/org/owasp/webgoat/challenges/challenge8/Assignment8.java

@@ -2,6 +2,7 @@
 
 import lombok.extern.slf4j.Slf4j;
 import org.owasp.webgoat.assignments.AssignmentEndpoint;
+import org.owasp.webgoat.assignments.AttackResult;
 import org.owasp.webgoat.challenges.Flag;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
@@ -59,5 +60,10 @@ public ResponseEntity<Map<String, Integer>> average() {
         var json = Map.of("average", (int) Math.ceil((double) categories / totalNumberOfVotes));
         return ResponseEntity.ok(json);
     }
+
+    @GetMapping("/challenge/8/notUsed")
+    public AttackResult notUsed() {
+        throw new IllegalStateException("Should never be called, challenge specific method");
+    }
 }