Hello everyone! I'm currently working on an iOS app developed with Swift that involves connecting to a specific bluetooth device and exchanging data even when the app is terminated or running in the background. I just want to understand why the CBCenterManager should be Implicitly unwrapped to use it. I have check out couple off apple developer sample project it was set to Implicitly unwrapped. can some one help to understand the reason behind this, also what are possible issues/scenario trigger if we set the centermanager to optional "CBcentermanager?" Thanks in Advance!