setIoPriority
Sets the IO priority to use while loading directories.
Setting the priority while @self is loading will reprioritize the ongoing load as soon as possible.
The default IO priority is %G_PRIORITY_DEFAULT, which is higher than the GTK redraw priority. If you are loading a lot of directories in parallel, lowering it to something like %G_PRIORITY_DEFAULT_IDLE may increase responsiveness.
Parameters
ioPriority
IO priority to use