dynamicMapLayerOptions: Options for dynamic map layer.
In leaflet.esri: 'ESRI' Bindings for the 'leaflet' Package

Options for dynamic map layer.

dynamicMapLayerOptions(format = "png24", transparent = TRUE, f = "json",
  attribution = "", layers = NULL, layerDefs = NULL, opacity = 1,
  position = "front", maxZoom = NULL, minZoom = NULL,
  dynamicLayers = NULL, token = NULL, proxy = NULL, useCors = TRUE, ...)

`format`	Output format of the image.
`transparent`	Allow the server to produce transparent images.
`f`	Server response content type.
`attribution`	Attribution from service metadata copyright text is automatically displayed in Leaflet's default control. This property can be used for customization.
`layers`	An array of Layer IDs like [3, 4, 5] to show from the service.
`layerDefs`	A string representing a query to run against the service before the image is rendered. This can be a string like "3:STATE_NAME="Kansas"" or an object mapping different queries to specific layers 3:"STATE_NAME="Kansas"", 2:"POP2007>25000".
`opacity`	Opacity of the layer. Should be a value between 0 (completely transparent) and 1 (completely opaque).
`position`	Position of the layer relative to other overlays.
`maxZoom`	Closest zoom level the layer will be displayed on the map.
`minZoom`	Furthest zoom level the layer will be displayed on the map.
`dynamicLayers`	JSON object literal used to manipulate the layer symbology defined in the service itself. Requires a 10.1 (or above) map service which supports dynamicLayers requests.
`token`	If you pass a token in your options it will be included in all requests to the service.
`proxy`	URL of an ArcGIS API for JavaScript proxy or ArcGIS Resource Proxy to use for proxying requests.
`useCors`	If this service should use CORS when making GET requests.
`...`	extra options