A sequence of custom parameters appended to the URL of all requests related to a layer.

Referenced by: Annotation Layer (ArcGISAnnotationLayer), Catalog Layer (CatalogLayer), CSV Layer (CSV), Dimension Layer (ArcGISDimensionLayer), Feature Layer (ArcGISFeatureLayer), GeoJSON Layer (GeoJSON), Image Service Layer (ArcGISImageServiceLayer), Image Service Vector Layer (ArcGISImageServiceVectorLayer), Map Service Layer (ArcGISMapServiceLayer), Stream Layer (ArcGISStreamLayer), Subtype Group Layer (SubtypeGroupLayer), table, Tiled Image Service Layer (ArcGISTiledImageServiceLayer), Tiled Map Service Layer (ArcGISTiledMapServiceLayer), Vector Tile Layer (VectorTileLayer)


FeatureLayer with custom parameters

  "layerType": "ArcGISFeatureLayer",
  "url": "",
  "title": "Median Home Value and Income - Block Group",
  "customParameters": {
    "key": "7FA3B7BABB7B45749BF3C6358F2B228F"

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