diff --git a/src/main/java/de/tudresden/inf/st/openapi/OpenAPIMain.java b/src/main/java/de/tudresden/inf/st/openapi/OpenAPIMain.java
index d3c70b53461246a52b9805d2597ac046b0361596..46c6df5644f041508904173fa8d9d0414e73a298 100644
--- a/src/main/java/de/tudresden/inf/st/openapi/OpenAPIMain.java
+++ b/src/main/java/de/tudresden/inf/st/openapi/OpenAPIMain.java
@@ -26,14 +26,16 @@ public class OpenAPIMain {
     File resource = new File("./src/main/resources");
 
     // init parser
-    String fileName = "./src/main/resources/3.1/basicOAS31.yaml";
+    String fileName = "./src/main/resources/3.0/petstore.yaml";
     ParseOptions options = new ParseOptions();
     options.setResolve(true);
     options.setResolveFully(true);
     options.setAllowEmptyString(false);
-    SwaggerParseResult result = new OpenAPIParser().readLocation(fileName, null, options);
+    SwaggerParseResult result = new OpenAPIParser().readLocation(fileName, null, null);
     OpenAPI openAPI = result.getOpenAPI();
 
+    //System.out.println(openAPI.getPaths().get("/pet").getPost().getRequestBody().get$ref());
+
     // Yaml String
     System.out.println(Yaml.mapper().writerWithDefaultPrettyPrinter().writeValueAsString(openAPI));
 
diff --git a/uml/relast.png b/uml/relast.png
index 4bae90bd831720792dda03b561cc9fe8e0246275..27c663f7701cc3f8df585f5ab926113e0c2dc98f 100644
Binary files a/uml/relast.png and b/uml/relast.png differ