set
Sets style source properties.This method can be used to perform batch update for a style source properties. The structure of aprovided `properties` value must conform to a format for a corresponding [source type](https://docs.mapbox.com/mapbox-gl-js/style-spec/sources/).Modification of a source [type](https://docs.mapbox.com/mapbox-gl-js/style-spec/sources/#type) is not allowed.
Return
A string describing an error if the operation was not successful, empty otherwise.
Parameters
sourceId
A style source identifier.
properties
A map of Style source properties.