add
open override fun addStyleCustomLayer(layerId: String, layerHost: CustomLayerHost, layerPosition: LayerPosition?): Expected<String, None>
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Adds a new style custom layer.
Runtime style layers are valid until they are either removed or a new style is loaded.
Note: Custom layers are only valid on OpenGL rendering backend. Attempting to add a custom layer on Metal rendering backend results in undefined behavior.
Return
A string describing an error if the operation was not successful, or empty otherwise.
Parameters
layer
Style layer id.
layer
Style custom layer host.
layer
The position of the layer