fun setContentSize(rect: RectF): UnitNotifies the helper of the content size (be it a child View, a Bitmap, or whatever else). This is needed for the helper to start working.
@JvmOverloads fun setContentSize(width: Float, height: Float, applyTransformation: Boolean = false): Unit
Notifies the helper of the content size (be it a child View, a Bitmap, or whatever else). This is needed for the helper to start working.
applyTransformation - whether to apply the transformation defined by setTransformation