public AssociateVpcCidrBlockRequest withCidrBlock(String cidrBlock) {
        setCidrBlock(cidrBlock);
        return this;
    }
<p>
An IPv4 CIDR block to associate with the VPC.
</p>

@param cidrBlock
       An IPv4 CIDR block to associate with the VPC.
@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/AssociateVpcCidrBlockRequest.java