public void setCidrIpv4(String cidrIpv4) {
        this.cidrIpv4 = cidrIpv4;
    }
<p>
The IPv4 CIDR range.
</p>

@param cidrIpv4
       The IPv4 CIDR range.
aws-java-sdk-ec2/src/main/java/com/amazonaws/services/ec2/model/SecurityGroupRule.java