how to add the menu button in the UIDocumentInteractionController class method for ipad.

Question

i want to add the menu button in the document file to open it in the other app ,how to add the button in the menubar to open it in the other app.

how can i use this method for that-

• (BOOL)presentOpenInMenuFromBarButtonItem:(UIBarButtonItem *)item animated:(BOOL)animated

if anyone know pls answer the question.