UIScrollView with SnapKit

sampleScrollview.swift

import UIKit
import SnapKit

func setScrollView(content: UIView) {
    // called in ViewController
    
    self.edgesForExtendedLayout = []
    let scrollView = UIScrollView()
    let wrapper = UIView()
    
    self.view.addSubview(scrollView)
    scrollView.addSubview(wrapper)
    wrapper.addSubview(content)
    
    content.snp.makeConstraints { make in
        make.edges.equalToSuperview()
    }
    
    scrollView.snp.makeConstraints { make in
        make.top.equalTo(topLayoutGuide.snp.bottom)
        make.bottom.equalToSuperview()
        make.width.equalToSuperview()
    }
    
    wrapper.snp.makeConstraints { make in
        make.edges.equalToSuperview()
        
        // only vertical scroll
        make.width.equalToSuperview()
        
        // only horizontal scroll
        //make.height.equalToSuperview()
    }
}

Why do you need wrapper? Can't you add the content view directly to scrollView?