public HostOffering withDuration(Integer duration) {
        setDuration(duration);
        return this;
    }
<p>
The duration of the offering (in seconds).
</p>

@param duration
       The duration of the offering (in seconds).
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-ec2/src/main/java/com/amazonaws/services/ec2/model/HostOffering.java