public EventSubscription withCustSubscriptionId(String custSubscriptionId) {
        setCustSubscriptionId(custSubscriptionId);
        return this;
    }
<p>
The Amazon DocumentDB event notification subscription ID.
</p>

@param custSubscriptionId
       The Amazon DocumentDB event notification subscription ID.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-docdb/src/main/java/com/amazonaws/services/docdb/model/EventSubscription.java