getFileForSaving saving default folder

In my plugin I use getFileForSaving to prompt the user for a name and location for an exported file. I’d like to store the last location (folder) and use that next time I call getFileForSaving but I can’t find any place where I can specify the location except for the “domain” which is too general. Is there a way to do this with UXP (in the old CEP days we used to do it with promptSavePath)
Is there a way to specify the save path for getFileForSaving?