Get the sublayer extension for a given id.
The id of the sublayer extension.
The sublayer extension.
Get the corresponding sublayer extension for a given sublayer id.
The id of the sublayer.
The corresponding sublayer extension.
Gets the corresponding sublayer extension for a given sublayer.
A sublayer.
The corresponding sublayer extension.
A collection of sublayer extensions belonging to a LayerExtension or SublayerExtension.