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