iOS Swift adjust frame of UILabel based on Text length, size and font

import UIKit

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        
        self.navigationItem.title = "Main View"
        
        //Set label height based on Text length, font and size...
        addLabel()
        
        
   }
    
    func addLabel(){
        
        let myLabel = UILabel()
        myLabel.textColor = UIColor.black
        myLabel.backgroundColor = UIColor.cyan
        myLabel.numberOfLines = 0;
        myLabel.font = UIFont(name: "Marker Felt", size: 24)
        myLabel.translatesAutoresizingMaskIntoConstraints = false
        self.view.addSubview(myLabel)
        
        myLabel.text =
        """
        Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.\n
        Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
        """
        
        let maxWidth = view.bounds.size.width - 40
        let maximumLabelSize: CGSize = CGSize(width: maxWidth, height: CGFloat.greatestFiniteMagnitude)
        let expectedLabelSize: CGSize = myLabel.sizeThatFits(maximumLabelSize)
        // create a frame that is filled with the UILabel frame data
        var newFrame: CGRect = myLabel.frame
        // resizing the frame to calculated size
        newFrame.size.height = expectedLabelSize.height
        // put calculated frame into UILabel frame
        myLabel.frame = newFrame
        
        var allConstraints: [NSLayoutConstraint] = []
         let views = ["view": view!, "myLabel": myLabel]
        
        let horizontalConstraints = NSLayoutConstraint.constraints(
            withVisualFormat: "H:|-[myLabel]-(>=10)-|", metrics: nil, views: views)
        allConstraints += horizontalConstraints
        
        let verticalConstraints = NSLayoutConstraint.constraints(
            withVisualFormat: "V:|-(>=40)-[myLabel]", metrics: nil, views: views)
        allConstraints += verticalConstraints
        
        NSLayoutConstraint.activate(allConstraints)
 
    }
    

}