public PlotFunctionListItem(@Nonnull PlotFunction plotFunction) {
   this.plotFunction = plotFunction;
   this.viewBuilder = ViewFromLayoutBuilder.newInstance(R.layout.cpp_plot_function_list_item);
   this.tag = PREFIX + plotFunction.getXyFunction().getExpressionString();
 }
 @Nonnull
 public static PropertyView newPropertyView(@Nonnull Context context) {
   return new PropertyView(
       ViewFromLayoutBuilder.newInstance(R.layout.mpp_property).build(context));
 }