code: public void downloadAssets(String toExtension) throws InstallException {
          downloadAssets(getResolveDirector().getInstallResources(), toExtension);
          if (getResolveDirector().getLocalInstallAssetsSize() > 0)
              this.installAssets.add(getResolveDirector().getLocalInstallAssets());
      }
docs: Downloads assets in install resources
  
  @param toExtension location of a product extension
  @throws InstallException