let controller = MyViewController()

let sheetController = SheetViewController(controller: controller)

// It is important to set animated to false or it behaves weird currently
self.present(sheetController, animated: false, completion: nil) 

let controller = MyViewController()

let sheetController = SheetViewController(controller: controller, sizes: [.fixed(100), .fixed(200), .halfScreen, .fullScreen])

// Adjust how the bottom safe area is handled on iPhone X screens
sheetController.blurBottomSafeArea = false
sheetController.adjustForBottomSafeArea = true

// Turn off rounded corners
sheetController.topCornersRadius = 0

// Make corners more round
sheetController.topCornersRadius = 15

// Disable the dismiss on background tap functionality
sheetController.dismissOnBackgroundTap = false

// Extend the background behind the pull bar instead of having it transparent
sheetController.extendBackgroundBehindHandle = true

// Change the overlay color
sheetController.overlayColor = UIColor.red

// Change the handle color
sheetController.handleColor = UIColor.orange

self.present(sheetController, animated: false, completion: nil)

let sheet = SheetViewController(controller: controller, sizes: [.fixed(420), .fullScreen])
sheet.willDismiss = { _ in
    // This is called just before the sheet is dismissed
}
sheet.didDismiss = { _ in
    // This is called after the sheet is dismissed
}
self.present(sheet, animated: false, completion: nil)

/// This should be called by any child view controller that expects the sheet to use be able to expand/collapse when the scroll view is at the top.
func handleScrollView(_ scrollView: UIScrollView)

override func viewDidLoad() {
  super.viewDidLoad()
  
  self.sheetViewController!.handleScrollView(self.scrollView) // or tableView/collectionView/etc
}