Composable to bitmap without displaying it

Question

When using classic Views it is easy to obtain a bitmap from a view without displaying it. I create the view class through a LayoutInflater, and then, since it hasn't been attached to a view, I measure it first. I have the following extension function which measures it and draws the view on a bitmap:

fun View.toBitmap(width, height): Bitmap {
    this.measure(
        View.MeasureSpec.makeMeasureSpec(width, View.MeasureSpec.EXACTLY),
        View.MeasureSpec.makeMeasureSpec(height, View.MeasureSpec.EXACTLY),
    )
    val bitmap = Bitmap.createBitmap(this.measuredWidth, this.measuredHeight, Bitmap.Config.ARGB_8888)
    val canvas = Canvas(bitmap)
    this.layout(0, 0, this.measuredWidth, this.measuredHeight)
    this.draw(canvas)
    return bitmap
}

When using Composables I can't succeed in exporting a bitmap from a view.

I imagined something like this:

class MyComposableView @JvmOverloads constructor(
    context: Context,
    attrs: AttributeSet? = null,
    defStyleAttr: Int = 0
): AbstractComposeView(context, attrs, defStyleAttr) {
    @Composable
    override fun Content() {
        MyComposable()
    }
}

What I did is instancing a MyComposableView with the application context, and then I tried to obtain a bitmap with the extension function toBitmap. The result is the following exception:

java.lang.IllegalStateException: Cannot locate windowRecomposer; View io.myapp.MyComposableView{f66ecdd V.E...... ......I. 0,0-0,0} is not attached to a window

What I can't understand is why the exception is thrown for the AbstractComposeView but is not thrown for the view obtained through the inflater.

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EDIT: on 09 Apr. 2022 it seems there's not a solution other than using a classic XML layout.