ArcGIS REST Services Directory
JSON

Imagery/BLM_CA_MTP_Base (ImageServer)

{"rasterFunctionInfos": [
 {
  "name": "MTP_RasterSymbology",
  "description": "Raster function to display 1 values as transparent",
  "help": "",
  "functionType": 0,
  "thumbnail": ""
 },
 {
  "name": "None",
  "description": "Make a Raster or Raster Dataset into a Function Raster Dataset.",
  "help": "",
  "functionType": 0,
  "thumbnail": ""
 }
]}