code: @NonNull
      public IconicsDrawable drawBackgroundContour(boolean drawBackgroundContour) {
          if (mDrawBackgroundContour != drawBackgroundContour) {
              mDrawBackgroundContour = drawBackgroundContour;
  
              mIconPadding += (mDrawBackgroundContour ? 1 : -1) * mBackgroundContourWidth * 2;
  
              invalidateSelf();
          }
          return this;
      }
docs: Enable/disable background contour drawing.
  
  @return The current IconicsDrawable for chaining.