public Instance withRegisteredBy(String registeredBy) {
        setRegisteredBy(registeredBy);
        return this;
    }
<p>
For registered instances, who performed the registration.
</p>

@param registeredBy
       For registered instances, who performed the registration.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-opsworks/src/main/java/com/amazonaws/services/opsworks/model/Instance.java