code: public void setSection3DEffectVisible(final boolean SECTION_3D_EFFECT_VISIBLE) {
          this.section3DEffectVisible = SECTION_3D_EFFECT_VISIBLE;
          init(getInnerBounds().width, getInnerBounds().height);
          repaint(getInnerBounds());
      }
docs: Enables / disables the visibility of the 3d effect gradient overlay for the sections
  @param SECTION_3D_EFFECT_VISIBLE