try {
                            // is this designated for interception purpose? If so, don't load them in the MavenEmbedder
                            // earlier I tried to use a marker file in the same directory, but that won't work
                            r = new BufferedReader(new InputStreamReader(url.openStream()));
                            for (int i=0; i<2; i++) {
                                String l = r.readLine();
                                if(l!=null && l.contains("MAVEN-INTERCEPTION-TO-BE-MASKED"))
                                    return true;
                            }
                        } catch (IOException _) {
                            // let whoever requesting this resource re-discover an error and report it