OptionalgroupA named group of style layers, a base-map group in the vocabulary of BaseMapModule
or the layers of another style-owned module (pois, trafficFlow, trafficIncidents, hillshade).
OptionalidThe layer id must contain none of these (case-insensitive).
OptionalidThe layer id must contain one of these (case-insensitive).
OptionallayerLayer types (line, fill, symbol, …).
OptionalmetadataThe style's own metadata.group values, for groups the SDK does not name.
OptionalsourceVector-tile source layers (roads, places, poi, …).
How StylingFoundationsModule.layers picks style layers, by a named group, layer type, vector-tile source layer and case-insensitive id fragments. Every given constraint must hold.