public RuleSummary withIdentifier(String identifier) {
        setIdentifier(identifier);
        return this;
    }
<p>
The unique ID of the retention rule.
</p>

@param identifier
       The unique ID of the retention rule.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-recyclebin/src/main/java/com/amazonaws/services/recyclebin/model/RuleSummary.java