void AddDiscoveredItemImpl ( [FDiscoveredItem::EType](API\Plugins\ContentBrowserFileDataSource\UContentBrowserFileDataSource\FDiscoveredItem\EType) InItemType, const [FString](API\Runtime\Core\Containers\FString) & InMountPath, const [FString](API\Runtime\Core\Containers\FString) & InDiskPath, const [FName](API\Runtime\Core\UObject\FName) InChildMountPathName, const bool bIsRootPath )