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For examples of extensions using this hook, see Category:CampaignEventsGetAllEventsTabs extensions . Category:Extension hooks#CampaignEventsGetAllEventsTabs Category:Undocumented extension hooks#CampaignEventsGetAllEventsTabs Category:Extension hooks provided by CampaignEvents Category:Extension hooks#CampaignEventsGetAllEventsTabs Category:Undocumented extension hooks#CampaignEventsGetAllEventsTabs Category:Extension hooks provided by CampaignEvents