If true, the first request for a single layer in a MapServer will cause all layers to be fetched at once.
The amount of time (in milliseconds) to cache the response for. The default is 30 seconds.
Makes a request to a url and returns a response.
The URL at which to send the request.
Optionaloptions: ArcGISRequestOptionsThe options for the request.
The request helper to be used when making requests through ArcGIS objects.