customParameters
A sequence of custom parameters appended to the URL of all requests related to a layer.
Referenced by: CSV Layer (CSV), Feature Layer (ArcGISFeatureLayer), GeoJSON Layer (GeoJSON), Image Service Layer (ArcGISImageServiceLayer), Map Service Layer (ArcGISMapServiceLayer), table, Tiled Image Service Layer (ArcGISTiledImageServiceLayer), Tiled Map Service Layer (ArcGISTiledMapServiceLayer), Vector Tile Layer (VectorTileLayer), Web Map Tile Service Info, WMS Layer (WMS)
Example
{
"key": "7FA3B7BABB7B45749BF3C6358F2B228F"
}