Sure. Actually you can see this for yourself if you have an OEM install laying around sine the netapp_filer plugin comes packaged with the 12c agent (even though it's deprecated).
One other thing, when we were looking at the xmls trying to see if we could fix this ourselves, we noticed a typo in the default collection file.
<Condition COLUMN_NAME="QtreePresentUsed"
Obviously that should be "QtreePercentUsed".
I'm not sure what, if any impact this has on it, what we're looking for is a netapp plugin where all of the core metrics can be set.
See the image below which is what the old netapp_filer developed by Oracle allows us to set.