[xwiki-users] Why deleted page still appear in the UI?

Hi users, I'm developing a java component that offer APIs accessed through script services to perfom modification to the wiki. When I delete a document (thus the related page I guessed) from my java code with the "*.deleteDocument(doc, context)*", on my browser I see the last modification as a page deletion but the page is still accessible on the tree representation. The XWikiDocument's method ".setHidden(true)" solve my problem, but I can't catch the relations between xwiki pages-->Documents-->Document reference and how to handle deletion of non-terminal pages preserving the information contained in them like: the wiki and the nested page to whom they had been belonged, the content and the comments. Thanks for your help, Giordano.