gistfile1.txt

import UIKit

class TestView: UIView {

    @IBOutlet var contentView: UIView!
    @IBOutlet weak var mainLabel: UILabel!
    
    override init(frame: CGRect) {
        super.init(frame: frame)
        commonInit()
    }
    
    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
        commonInit()
    }
    
    private func commonInit() {
        
        Bundle(for: TestView.self).loadNibNamed("TestView", owner: self, options: nil)
        contentView.frame = self.bounds
        contentView.autoresizingMask = [.flexibleHeight, .flexibleWidth]
        addSubview(contentView)

    }
    
    

}