code: public static URLClassLoader getClassLoaderForExtension(File extension, boolean useExtensionClassloaderFirst)
    {
      return loadersMap.computeIfAbsent(
          extension,
          theExtension -> makeClassLoaderForExtension(theExtension, useExtensionClassloaderFirst)
      );
    }
docs: @param extension The File instance of the extension we want to load
  
  @return a URLClassLoader that loads all the jars on which the extension is dependent