setLoader 
  inline fun <Type : Any, Parameters : AssetLoaderParameters<Type>> AssetManager.setLoader(assetLoader: AssetLoader<Type, Parameters>, suffix: String? = null)
Parameters
Type
type of the handled asset.
Parameters
optional parameters used to load the assets.
assetLoader 
will be used to load files associated with the selected type.
suffix
if set, file names end with this suffix for the passed loader to be used. Pass null to choose the     default loader. Optional, null by default.
See also
AssetLoader