public XMLStyleModel GetStyle(uint index)
 {
     return(_styles.Get(index));
 }
 public XMLFillModel GetFill(uint index)
 {
     return(_fills.Get(index));
 }
 public XMLBorderModel GetBorder(uint index)
 {
     return(_borders.Get(index));
 }
 public XMLFontModel GetFont(uint index)
 {
     return(_fonts.Get(index));
 }