public String getPortfolioId() {
        return this.portfolioId;
    }
<p>
The identifier of the portfolio the product resides in. The constraint applies only to the instance of the
product that lives within this portfolio.
</p>

@return The identifier of the portfolio the product resides in. The constraint applies only to the instance of
        the product that lives within this portfolio.
aws-java-sdk-servicecatalog/src/main/java/com/amazonaws/services/servicecatalog/model/ConstraintDetail.java