{"json_modified": "2016-03-28T08:31:58.062019", "uuid": "ab8c615f-0818-4920-8057-f6d577de9e2d", "title": "system/unload", "url": "/en-US/docs/Mozilla/Add-ons/SDK/Low-Level_APIs/system_unload", "tags": [], "translations": [], "modified": "2016-01-15T10:33:51", "label": "system/unload", "localization_tags": [], "locale": "en-US", "id": 87365, "last_edit": "2016-01-15T10:33:49", "summary": "Register callbacks that are called when a module is unloaded.", "sections": [{"id": "Quick_Links", "title": null}, {"id": "Globals", "title": "Globals"}, {"id": "Functions", "title": "Functions"}, {"id": "ensure(object_name)", "title": null}, {"id": "Parameters", "title": "Parameters"}, {"id": "when(callback)", "title": null}, {"id": "Parameters_2", "title": "Parameters"}], "slug": "Mozilla/Add-ons/SDK/Low-Level_APIs/system_unload", "review_tags": []}