reply 401 on wrong API key

src/main/java/org/sebi/incident/IncidentResource.java

@@ -1,10 +1,9 @@
 package org.sebi.incident;
 
-import java.util.List;
-
 import javax.ws.rs.GET;
 import javax.ws.rs.Path;
 import javax.ws.rs.QueryParam;
+import javax.ws.rs.core.Response;
 
 import org.eclipse.microprofile.config.inject.ConfigProperty;
 
@@ -19,11 +18,11 @@ public class IncidentResource {
      
 
     @GET
-    public List<Incident> getIncidents(@QueryParam("api_key") String apiKey){
+    public Response getIncidents(@QueryParam("api_key") String apiKey){
         if(this.apiKey.equals(apiKey)){
-            return Incident.listAll();
+            return Response.ok(Incident.listAll()).build();
         }
-       return null;
+       return Response.status(Response.Status.UNAUTHORIZED).build();
     } 
 
     @GET