public static Color1931XYZ ToXYZ(this Color1976LCh LCh, Color1931XYZ whiteLab)
 {
     return(ToXYZ((Color1976Lab)LCh, whiteLab));
 }
 public static ColorRGB ToRGB(this Color1976LCh LCh, ColorTransformMatrix XYZtoRGB, Color1931XYZ white)
 {
     return(ToRGB((Color1976Lab)LCh, XYZtoRGB, white));
 }
 public static Color1976Lab ToLab(this Color1976LCh LCh)
 {
     return((Color1976Lab)LCh);
 }
 public static Chromaticity1976uv Touv(this Color1976LCh LCh, Color1931XYZ white)
 {
     return(Touv((Color1976Lab)LCh, white));
 }
 public static Color1931xyY ToxyY(this Color1976LCh LCh, Color1931XYZ whiteLab)
 {
     return(ToxyY((Color1976Lab)LCh, whiteLab));
 }