create (EditMenu)

         # File lib/json/editor.rb, line 645
    645:       def create
    646:         title = MenuItem.new('Edit')
    647:         title.submenu = menu
    648:         add_item('Copy', ?c, &method(:copy))
    649:         add_item('Paste', ?v, &method(:paste))
    650:         add_separator
    651:         add_item('Find', ?f, &method(:find))
    652:         add_item('Find Again', ?g, &method(:find_again))
    653:         add_separator
    654:         add_item('Sort', ?S, &method(:sort))
    655:         title
    656:       end