public WatermarkOptions LayoutWithFitBox(WatermarkFitBox fitBox, WatermarkConstraintMode fitMode,
                                          ConstraintGravity gravity)
 {
     FitBox  = fitBox;
     FitMode = fitMode;
     Gravity = gravity;
     return(this);
 }
 public WatermarkOptions WithFitBox(WatermarkFitBox fitBox)
 {
     FitBox = fitBox;
     return(this);
 }