code: public JsHandlerRegistration addGeometrySplitStartHandler(final GeometrySplitStartHandler handler) {
  		org.geomajas.plugin.editing.client.split.event.GeometrySplitStartHandler h;
  		h = new org.geomajas.plugin.editing.client.split.event.GeometrySplitStartHandler() {
  
  			public void onGeometrySplitStart(GeometrySplitStartEvent event) {
  				Geometry geometry = event.getGeometry();
  				org.geomajas.plugin.editing.jsapi.client.split.event.GeometrySplitStartEvent e;
  				e = new org.geomajas.plugin.editing.jsapi.client.split.event.GeometrySplitStartEvent(geometry);
  				handler.onGeometrySplitStart(e);
  			}
  		};
  		HandlerRegistration registration = delegate.addGeometrySplitStartHandler(h);
  		return new JsHandlerRegistration(new HandlerRegistration[] { registration });
  	}
docs: Register a {@link GeometrySplitStartHandler} to listen to events that signal the splitting process has started.
  
  @param handler
  The {@link GeometrySplitStartHandler} to add as listener.
  @return The registration of the handler.