code: private void initializeNoxItemMargin(TypedArray attributes) {
      float noxItemMarginDefaultValue = getResources().getDimension(R.dimen.default_nox_item_margin);
      float noxItemMargin =
          attributes.getDimension(R.styleable.nox_item_margin, noxItemMarginDefaultValue);
      noxConfig.setNoxItemMargin(noxItemMargin);
    }
docs: Configures the nox item default margin used in NoxConfig, Shape and NoxItemCatalog to draw nox
  item instances during the onDraw execution.