code: public static URI[] downloadJar(String org, String module, String version, boolean transitive) throws IOException {
      Map<String, Object> artifactMap = Maps.newHashMap();
      artifactMap.put("org", org);
      artifactMap.put("module", module);
      artifactMap.put("version", version);
      artifactMap.put("transitive", transitive);
      return downloadJar(artifactMap);
    }
docs: Download jar through {@link Grape} given an org, module and version
  It is assumed that an ivy settings file exists on the classpath