How to apply inner shadow on SF symbols to make them look like as shown in the picture?

I have been trying to get this debossed effect in SwiftUI but nothing is working out. I tried shadow(color:radius:x:y:) modifier but it applies shadow on the outside of symbol. Can you please tell me if there are any other APIs or tricks to achieve this ? Thank You !

Love the debossed effect, reminds me of iOS 6. The key was finding inverseMask and then I had a play around and came up with this:

import SwiftUI

extension View {
    // https://www.raywenderlich.com/7589178-how-to-create-a-neumorphic-design-with-swiftui
    func inverseMask<Mask>(_ mask: Mask) -> some View where Mask: View {
        self.mask(mask
            .foregroundColor(.black)
            .background(Color.white)
            .compositingGroup()
            .luminanceToAlpha()
        )
    }
}

struct DebossTest: View {
    static var lightPurple = UIColor(red: 212/255, green: 206/255, blue: 247/255, alpha: 1)
    
    var body: some View {
        ZStack {
            Color(uiColor: DebossTest.lightPurple)
            MyButton()
                .font(.system(size: 144))
        }
    }
}


struct MyButton: View {
    
    static var darkPurple = UIColor(red: 140/255, green: 134/255, blue: 211/255, alpha: 1)
    let trashName = "trash.fill"
    
    var body: some View {
        ZStack {
            
            // the darker inset image
            Image(systemName: trashName)
                .foregroundColor(Color(uiColor: MyButton.darkPurple))
            
            // black inner shadow
            Rectangle()
                .inverseMask(Image(systemName: trashName))
                .shadow(color: Color.black, radius: 1, x: 0, y: 1)
                .mask(Image(systemName: trashName))
                .clipped()
            
            // white bottom edges
            Image(systemName: trashName)
                .shadow(color: Color.white, radius: 1, x: 0, y: 1)
                .inverseMask(Image(systemName: trashName))
        }
        .frame(width: 185, height: 140)
    }
}

struct DebossTest_Previews: PreviewProvider {
    static var previews: some View {
        DebossTest()
    }
}