Changing function with borders on specific sides to also be able to accommodate corner radius?

Question

So I have the following struct and view extension to be able to add to any view, any ideas how to fix the corner of the view in the image below?

extension View {
    func border(width: CGFloat, edges: [Edge], color: Color) -> some View {
        overlay(EdgeBorder(width: width, edges: edges).foregroundColor(color))
    }
}

struct EdgeBorder: Shape {

    var width: CGFloat
    var edges: [Edge]

    func path(in rect: CGRect) -> Path {
        var path = Path()
        for edge in edges {
            var x: CGFloat {
                switch edge {
                case .top, .bottom, .leading: return rect.minX
                case .trailing: return rect.maxX - width
                }
            }

            var y: CGFloat {
                switch edge {
                case .top, .leading, .trailing: return rect.minY
                case .bottom: return rect.maxY - width
                }
            }

            var w: CGFloat {
                switch edge {
                case .top, .bottom: return rect.width
                case .leading, .trailing: return self.width
                }
            }

            var h: CGFloat {
                switch edge {
                case .top, .bottom: return self.width
                case .leading, .trailing: return rect.height
                }
            }
            path.addPath(Path(CGRect(x: x, y: y, width: w, height: h)))
        }
        return path
    }
}

I tried attaching it to a VStack as follows:

VStack {
    // content
}
.clipShape(RoundedRectangle(cornerRadius: 20))
.border(width: 1, edges: [.leading, .bottom, .trailing], color: Color.black)

The only problem is that it ends up looking like this:

Answer 1

I round the borders like this with the view

                layerMinY
             O ----------- O
  layerMinX  |             | layerMaxX
             |             |
             O ----------- O
               layerMaxY

    self.myView.layer.borderWidth = 2
    self.myView.layer.borderColor = UIColor.black.cgColor
    self.myView.clipsToBounds = true
    self.myView.layer.cornerRadius = 10
    self.myView.layer.maskedCorners = [.layerMaxXMinYCorner, 
                                      .layerMaxXMaxYCorner]

Looks like this: