Watermark function implementations need to be registered with the utils.addWatermark function, and can then be set active by calling utils.set('activeWatermark', $name);
utils.addWatermark
utils.set('activeWatermark', $name);
Watermark function implementations need to be registered with the
utils.addWatermarkfunction, and can then be set active by callingutils.set('activeWatermark', $name);