How can I show notification panel when swiping down

I am making a launcher in flutter and I wanted to show notification panel when swipe down on homescreen.

I am trying with flutter_local_notifications package but I cant figure out how to do it,

 GestureDetector(
     onVerticalDragDown: (details) {
     // how do launch notification panel ?
     }
 )
      

Edit:

Here is the example: https://i.sstatic.net/rJBCF.gif

I solved the problem by calling native method through method channel

in your MainActivity.kt create a function to expand notification panel

private fun expandNotif() {
        val currentApiVersion = Build.VERSION.SDK_INT
        try {
            val service = getSystemService(Context.STATUS_BAR_SERVICE)
            val statusbarManager = Class.forName("android.app.StatusBarManager")

            val expandMethod: Method =
                    if (currentApiVersion <= Build.VERSION_CODES.N) {
                        statusbarManager.getMethod(EXPAND_METHOD)
                    } else {
                        statusbarManager.getMethod(EXPAND_NOTIFICATIONS_PANEL_METHOD)
                    }

            expandMethod.invoke(service)
        } catch (e: Exception) {
            // Handle exception appropriately for your application
        }
    }

Then call this function through method channel