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For examples of extensions using this hook, see Category:WikibaseRepoEntitySearchHelperCallbacks extensions . Category:Extension hooks#WikibaseRepoEntitySearchHelperCallbacks Category:Undocumented extension hooks#WikibaseRepoEntitySearchHelperCallbacks Category:Extension hooks provided by Wikibase Repository Category:Extension hooks#WikibaseRepoEntitySearchHelperCallbacks Category:Undocumented extension hooks#WikibaseRepoEntitySearchHelperCallbacks Category:Extension hooks provided by Wikibase Repository