create_menu_bar (MainWindow)

          # File lib/json/editor.rb, line 1099
    1099:       def create_menu_bar
    1100:         menu_bar = MenuBar.new
    1101:         @file_menu = FileMenu.new(@treeview)
    1102:         menu_bar.append @file_menu.create
    1103:         @edit_menu = EditMenu.new(@treeview)
    1104:         menu_bar.append @edit_menu.create
    1105:         @options_menu = OptionsMenu.new(@treeview)
    1106:         menu_bar.append @options_menu.create
    1107:         menu_bar
    1108:       end