code: public static com.liferay.commerce.product.model.CPRule addCPRule(
  		com.liferay.commerce.product.model.CPRule cpRule) {
  		return getService().addCPRule(cpRule);
  	}
docs: Adds the cp rule to the database. Also notifies the appropriate model listeners.
  
  @param cpRule the cp rule
  @return the cp rule that was added