public func anchor(_ top: NSLayoutYAxisAnchor? = nil, left: NSLayoutXAxisAnchor? = nil, bottom: NSLayoutYAxisAnchor? = nil, right: NSLayoutXAxisAnchor? = nil, topConstant: CGFloat = 0, leftConstant: CGFloat = 0, bottomConstant: CGFloat = 0, rightConstant: CGFloat = 0, widthConstant: CGFloat = 0, heightConstant: CGFloat = 0) {
       translatesAutoresizingMaskIntoConstraints = false

       _ = anchorWithReturnAnchors(top, left: left, bottom: bottom, right: right, topConstant: topConstant, leftConstant: leftConstant, bottomConstant: bottomConstant, rightConstant: rightConstant, widthConstant: widthConstant, heightConstant: heightConstant)
   }

   public func anchorWithReturnAnchors(_ top: NSLayoutYAxisAnchor? = nil, left: NSLayoutXAxisAnchor? = nil, bottom: NSLayoutYAxisAnchor? = nil, right: NSLayoutXAxisAnchor? = nil, topConstant: CGFloat = 0, leftConstant: CGFloat = 0, bottomConstant: CGFloat = 0, rightConstant: CGFloat = 0, widthConstant: CGFloat = 0, heightConstant: CGFloat = 0) -> [NSLayoutConstraint] {
       translatesAutoresizingMaskIntoConstraints = false

       var anchors = [NSLayoutConstraint]()

       if let top = top {
           anchors.append(topAnchor.constraint(equalTo: top, constant: topConstant))
       }

       if let left = left {
           anchors.append(leftAnchor.constraint(equalTo: left, constant: leftConstant))
       }

       if let bottom = bottom {
           anchors.append(bottomAnchor.constraint(equalTo: bottom, constant: -bottomConstant))
       }

       if let right = right {
           anchors.append(rightAnchor.constraint(equalTo: right, constant: -rightConstant))
       }

       if widthConstant > 0 {
           anchors.append(widthAnchor.constraint(equalToConstant: widthConstant))
       }

       if heightConstant > 0 {
           anchors.append(heightAnchor.constraint(equalToConstant: heightConstant))
       }

       anchors.forEach({$0.isActive = true})

       return anchors
   }