according to the following link:
https://developer.apple.com/documentation/gameplaykit/gknoise/1778280-init
the following constructor should combine several other GKNoises:
let combinednoise = GKNoise(componentNoises : [GKNoise](noisenew, noisenewnew), selectionNoise : noiseSource)
however, the playground returns a compilation error that says that this format is invalid.
Any help?