code: public static void load() {
          if (!isLoaded()) {
  //            ScriptInjector.fromString(OpenLayersV3Resources.INSTANCE.proj4js().getText()).setWindow(ScriptInjector.TOP_WINDOW).inject();
  //            ScriptInjector.fromString(OpenLayersV3Resources.INSTANCE.supercluster().getText()).setWindow(ScriptInjector.TOP_WINDOW).inject();
              ScriptInjector.fromString(OpenLayersV3Resources.INSTANCE.js().getText()).setWindow(ScriptInjector.TOP_WINDOW).inject();
              StyleInjector.injectStylesheetAtStart(OpenLayersV3Resources.INSTANCE.css().getText());
          }
      }
docs: Loads the offline library.