Defines a layer of features whose geometry and attributes will be stored directly within the web map.
See https://developers.arcgis.com/web-map-specification/objects/featureCollection/.
An array of Layer objects defining all the styling, geometry, and attribute information for the features.
Optional
Indicates if this layer should be shown in the legend in client applications. The default is true.
Defines a layer of features whose geometry and attributes will be stored directly within the web map.
See https://developers.arcgis.com/web-map-specification/objects/featureCollection/.