@Override
    public AssociateVpcCidrBlockResult associateVpcCidrBlock(AssociateVpcCidrBlockRequest request) {
        request = beforeClientExecution(request);
        return executeAssociateVpcCidrBlock(request);
    }
<p>
Associates a CIDR block with your VPC. You can associate a secondary IPv4 CIDR block, an Amazon-provided IPv6
CIDR block, or an IPv6 CIDR block from an IPv6 address pool that you provisioned through bring your own IP
addresses (<a href="https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-byoip.html">BYOIP</a>).
</p>
<p>
You must specify one of the following in the request: an IPv4 CIDR block, an IPv6 pool, or an Amazon-provided
IPv6 CIDR block.
</p>
<p>
For more information about associating CIDR blocks with your VPC and applicable restrictions, see <a
href="https://docs.aws.amazon.com/vpc/latest/userguide/vpc-ip-addressing.html">IP addressing for your VPCs and
subnets</a> in the <i>Amazon VPC User Guide</i>.
</p>

@param associateVpcCidrBlockRequest
@return Result of the AssociateVpcCidrBlock operation returned by the service.
@sample AmazonEC2.AssociateVpcCidrBlock
@see <a href="http://docs.aws.amazon.com/goto/WebAPI/ec2-2016-11-15/AssociateVpcCidrBlock" target="_top">AWS API
     Documentation</a>
aws-java-sdk-ec2/src/main/java/com/amazonaws/services/ec2/AmazonEC2Client.java