Enums.MapServiceImageFormat enumeration

The MapServiceImageFormat can be one of:

Constant	Description
`Enums.MapServiceImageFormatDefault`	`(0)` Default
`Enums.MapServiceImageFormatPNG`	`(1)` PNG
`Enums.MapServiceImageFormatPNG8`	`(2)` PNG8
`Enums.MapServiceImageFormatPNG24`	`(3)` PNG24
`Enums.MapServiceImageFormatPNG32`	`(4)` PNG32
`Enums.MapServiceImageFormatJPG`	`(5)` JPG
`Enums.MapServiceImageFormatJPGPNG`	`(6)` JPGPNG (return JPG if there are no transparent pixels in the requested extent, otherwise return PNG)
`Enums.MapServiceImageFormatBMP`	`(7)` BMP
`Enums.MapServiceImageFormatGIF`	`(8)` GIF
`Enums.MapServiceImageFormatTIFF`	`(9)` TIFF
`Enums.MapServiceImageFormatUnknown`	`(-1)` Unknown