def extension_script_base_paths(*args)
      @extension_script_base_paths ||= []
      args.each do |path|
        path = relative_to_script_path(path)
        @extension_script_base_paths << path unless @extension_script_base_paths.include?(path)
      end
      @extension_script_base_paths
    end
def extension_script_base_paths(*args)
      @extension_script_base_paths ||= []
      args.each do |path|
        path = relative_to_script_path(path)
        @extension_script_base_paths << path unless @extension_script_base_paths.include?(path)
      end
      @extension_script_base_paths
    end
Base paths for external scripts which extend methods of cloud object.
 Names of scripts become instance methods and can override the predefined
 cloud methods. The factory defaults to using any scripts in
 "<rs_root_path>/bin/<cloud alias(es)>" directories.