public void setCoreNetworkAttachmentArn(String coreNetworkAttachmentArn) {
        this.coreNetworkAttachmentArn = coreNetworkAttachmentArn;
    }
<p>
The ARN of the core network attachment.
</p>

@param coreNetworkAttachmentArn
       The ARN of the core network attachment.
aws-java-sdk-ec2/src/main/java/com/amazonaws/services/ec2/model/VpnConnection.java