pluggableUSB.h appears to be part of the core AVR Arduino Code which I assumed would be part of the core “SparkFun Apollo 3” boards library. Currently it doesn’t seem to be something I can include using the Red Board ATP in the standard Arduino IDE on macOS. I’m wondering if this is something that is supported yet or whether I’m looking for something that isn’t there yet.
I am not an expert, but I believe that as the Artemis uses a separate USB-Serial chip (As opposed to a USB interface on the Apollo Chip), it is not able to utilize this module.