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/
mdn2
/
en-US
/
docs
/
Mozilla
/
Add-ons
/
WebExtensions
/
API
/
events
events
Event
Rule
UrlFilter
/
mdn2
/
en-US
/
docs
/
Mozilla
/
Add-ons
/
WebExtensions
/
API
/
events
/
Event
Event
addListener
addRules
getRules
hasListener
hasListeners
removeListener
removeRules
/
Event
Rule
UrlFilter