virtual void AddFrontEndFilterExtensions ( [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< class [FFrontendFilterCategory](API\Editor\ContentBrowser\FFrontendFilterCategory) > DefaultCategory, [TArray](API\Runtime\Core\Containers\TArray)< [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< class [FFrontendFilter](API\Editor\ContentBrowser\FFrontendFilter) > > & InOutFilterList ) const