路径线SwiftUI的圆角

如何使两端的线圆角？我正在绘制一条简单的直线，如下所示，但无法获得圆角。“ .cornerRadius”不起作用。有任何想法吗？

struct Line: View {
    let geoProx: GeometryProxy

    var body: some View {
        Path{ path in
            path.move(to: CGPoint(x: geoProx.size.width/2, y: geoProx.size.height/2))
            path.addLine(to: CGPoint(x: geoProx.size.width/2 - geoProx.size.width/4, y: geoProx.size.height/2))

        }
        .stroke(lineWidth: 8.0)
        .foregroundColor(.white)
        .cornerRadius(10.0)
        .zIndex(1.5)
    }
}