code: public void addBootJars(List<URL> urlList) {
          addBootJars(cache.getJarFiles(kernelMf), urlList);
          addBootJars(cache.getJarFiles(logProviderMf), urlList);
  
          if (osExtensionMf != null)
              addBootJars(cache.getJarFiles(osExtensionMf), urlList);
      }
docs: Add any boot.jar resources specified by the kernel, log provider, or os extension definition files
  
  @param urlList target list for additional URLs.
  @see ResolverCache#getJarFiles(File)