Adds an asset to the list of assets to be downloaded and returns an instance representing that asset.
- iOS 5.0–13.0Deprecated
An object representing a URL request.
An instance of
NKAsset, which represents an issue asset that can be downloaded from the application’s server. Returns
nil if there a problem creating the object.
You must send
download(with:) to the returned object to begin the downloading of the asset.