code: @NonNull
    @SuppressWarnings("WeakerAccess")
    public SnackbarWrapper setIconMarginRes(@DimenRes int iconMargin) {
      return setIconMargin(context.getResources().getDimensionPixelSize(iconMargin));
    }
docs: Set the margin to be displayed between the icon and the text.
  
  @param iconMargin The margin before the icon.
  @return This instance.