Does characteristic have notify()?

[wegunterjr]

I am trying to use this awesome light BLE library, but need use the notify. I see it in the example, but when I compile, I get an error that there is no

error: 'class BLECharacteristic' has no member named 'notify'

error: 'class BLECharacteristic' has no member named 'notify'
pTxCharacteristic->notify();