Standard colorspace rules for Maya to use the right ACES colorspace. Uses a xml file located on a server to lookup structures in filename, to match the colorspace transform (IDT) of an image.
For more information: http://help.autodesk.com/view/MAYAUL/2019/ENU/?guid=GUID-631C665F-3092-4B2B-90B7-2A94158870C9