public LoadBalancerDescription withInstances(Instance... instances) {
        if (this.instances == null) {
            setInstances(new com.amazonaws.internal.SdkInternalList<Instance>(instances.length));
        }
        for (Instance ele : instances) {
            this.instances.add(ele);
        }
        return this;
    }
<p>
The IDs of the instances for the load balancer.
</p>
<p>
<b>NOTE:</b> This method appends the values to the existing list (if any). Use
{@link #setInstances(java.util.Collection)} or {@link #withInstances(java.util.Collection)} if you want to
override the existing values.
</p>

@param instances
       The IDs of the instances for the load balancer.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-elasticloadbalancing/src/main/java/com/amazonaws/services/elasticloadbalancing/model/LoadBalancerDescription.java