code: func (v *FontDescription) Merge(desc_to_merge *FontDescription, replace_existing bool) {
  	C.pango_font_description_merge(v.native(), desc_to_merge.native(), gbool(replace_existing))
  }
docs: //void pango_font_description_merge        (PangoFontDescription       *desc,
  //					  const PangoFontDescription *desc_to_merge,
  //					  gboolean                    replace_existing);