MDC-Android shape elevation in custom views

mdc_shape_elevation_custom_views.kt

/* Copyright 2020 Google LLC.
   SPDX-License-Identifier: Apache-2.0 */

class AppCustomView ... {
  
    ...
  
    private lateinit var materialShapeDrawable: MaterialShapeDrawable
  
    override fun setElevation(elevation: Float) {
        super.setElevation(elevation)
        materialShapeDrawable.setElevation(elevation)
    }
}