public ProductUserSummary withSubscriptionStartDate(String subscriptionStartDate) {
        setSubscriptionStartDate(subscriptionStartDate);
        return this;
    }
<p>
The start date of a subscription.
</p>

@param subscriptionStartDate
       The start date of a subscription.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-licensemanagerusersubscriptions/src/main/java/com/amazonaws/services/licensemanagerusersubscriptions/model/ProductUserSummary.java