public void setElevation(float elevation) {
        if (drawableState.elevation != elevation) {
            drawableState.shadowCompatRadius = Math.round(elevation);
            drawableState.elevation = elevation;
            invalidateSelfIgnoreShape();
        }
    }
public void setElevation ( float elevation ) { if ( drawableState . elevation != elevation ) { drawableState . shadowCompatRadius = Math . round ( elevation ) ; drawableState . elevation = elevation ; invalidateSelfIgnoreShape ( ) ; } }
Sets the elevation used to render shadows when {@link #requiresCompatShadow()} is true. This
value is the same as the native elevation that would be used to render shadows on API 21 and
up.

<p>TODO: The shadow radius should be the actual radius drawn, elevation should be
the height of the closest equivalent native elevation which produces a similar shadow.