public void setSourceSecurityGroup(SourceSecurityGroup sourceSecurityGroup) {
        this.sourceSecurityGroup = sourceSecurityGroup;
    }
<p>
The security group for the load balancer, which you can use as part of your inbound rules for your registered
instances. To only allow traffic from load balancers, add a security group rule that specifies this source
security group as the inbound source.
</p>

@param sourceSecurityGroup
       The security group for the load balancer, which you can use as part of your inbound rules for your
       registered instances. To only allow traffic from load balancers, add a security group rule that specifies
       this source security group as the inbound source.
aws-java-sdk-elasticloadbalancing/src/main/java/com/amazonaws/services/elasticloadbalancing/model/LoadBalancerDescription.java