public void setVpcId(String vpcId) {
        this.vpcId = vpcId;
    }
<p>
The unique identifier of the VPC that you want to associate with the rule group.
</p>

@param vpcId
       The unique identifier of the VPC that you want to associate with the rule group.
aws-java-sdk-route53resolver/src/main/java/com/amazonaws/services/route53resolver/model/AssociateFirewallRuleGroupRequest.java