{"json_modified": "2016-05-12T04:28:16.445302", "uuid": "4965c73d-21a0-4cea-9796-ba5bb951f7ae", "title": "system/events", "url": "/en-US/docs/Mozilla/Add-ons/SDK/Low-Level_APIs/system_events", "tags": [], "translations": [], "modified": "2016-05-12T04:28:16", "label": "system/events", "localization_tags": [], "locale": "en-US", "id": 87083, "last_edit": "2016-05-12T04:28:14", "summary": "API for working with the application observer service.", "sections": [{"id": "Quick_Links", "title": null}, {"id": "Usage", "title": "Usage"}, {"id": "Globals", "title": "Globals"}, {"id": "Functions", "title": "Functions"}, {"id": "emit(type_event)", "title": null}, {"id": "Parameters", "title": "Parameters"}, {"id": "on(type_listener_strong)", "title": null}, {"id": "Parameters_2", "title": "Parameters"}, {"id": "once(type_listener_strong)", "title": null}, {"id": "Parameters_3", "title": "Parameters"}, {"id": "off(type_listener)", "title": null}, {"id": "Parameters_4", "title": "Parameters"}], "slug": "Mozilla/Add-ons/SDK/Low-Level_APIs/system_events", "review_tags": []}