I am building a sleep app that helps track your sleep mostly for sleep apnea individuals. I have already coded it to save variables into Coredata when you click the add button. And I already have it connected to HealthKit with permissions through a class called 'HealthHelper.' However, Im confused how to pull data from HealthKit and attach it into the Coredata entry when my user clicks on the add button. I want to do this so that I can save all my regular user input variables with the info pulled from HealthKit, so it is one entry into the Coredata entity for the app to read. I am trying to save the following variables from HealthKit (sleep analysis such as time in bed vs time asleep, heart rate, O2, height, and body mass(weight)). Any help is greatly appreciated. My function for querying the Healthkit data is below, but Im confused how to get the values now to put into Coredata.

public func grabMostRecentHKSamples(for sampleType: HKSampleType,
                           completion: @escaping (HKQuantitySample?, Error?) -> Swift.Void) {
        let mostRecentPredicate = HKQuery.predicateForSamples(withStart: Date.distantPast,
                                                              end: Date(),
                                                              options: [])

        let sortDescriptor = NSSortDescriptor(key: HKSampleSortIdentifierStartDate,
                                              ascending: true)
        let limit = 1
        let sampleQuery = HKSampleQuery(sampleType: sampleType,
                                        predicate: mostRecentPredicate,
                                        limit: limit,
                                        sortDescriptors: [sortDescriptor]) { (query, results, error) in

            DispatchQueue.main.async {

               if let result = results?.last as? HKQuantitySample {
                }
            }
        }

        HKHealthStore().execute(sampleQuery)
        print("HealthKit Sample grab complete")
    }