How to Set White Balance?

Here is a code snippet by which I attempted to set a neutral white balance:

func prepare(completionHandler: @escaping (Error?) -> Void) {
        func createCaptureSession() {
            self.captureSession = AVCaptureSession()
  }
        
  func configureCaptureDevices() throws {
    let session = AVCaptureDevice.DiscoverySession(deviceTypes:  [.builtInWideAngleCamera], mediaType: AVMediaType.video, position: .back)
    let cameras = (session.devices.compactMap { $0 })
    if cameras.isEmpty {
      throw CameraControllerError.noCamerasAvailable
    }
            
    for camera in cameras {
      try camera.lockForConfiguration()
      camera.setWhiteBalanceModeLocked(
           with whiteBalanceGains:  AVCaptureDevice.WhiteBalanceGains( redGain: 1.0, greenGain: 1.0, blueGain: 1.0),
            completionHandler handler: ((CMTime) -> Void)? = nil
      ) // Errors: Extra arguments at positions #2, #3 in call, Cannot find 'with' in scope 

     camera.whiteBalanceMode = .locked
                        
    camera.unlockForConfiguration()
    }catch{
                        // To Do: Error handling here
    }
  }

My call to "AVCaptureDevice.WhiteBalanceGains()" gets errors. What is the correct way to do this?

How to Set White Balance?
 
 
Q