@Override
    public String toString() {
        StringBuilder sb = new StringBuilder();
        sb.append("{");
        if (getAmazonProvidedIpv6CidrBlock() != null)
            sb.append("AmazonProvidedIpv6CidrBlock: ").append(getAmazonProvidedIpv6CidrBlock()).append(",");
        if (getCidrBlock() != null)
            sb.append("CidrBlock: ").append(getCidrBlock()).append(",");
        if (getVpcId() != null)
            sb.append("VpcId: ").append(getVpcId()).append(",");
        if (getIpv6CidrBlockNetworkBorderGroup() != null)
            sb.append("Ipv6CidrBlockNetworkBorderGroup: ").append(getIpv6CidrBlockNetworkBorderGroup()).append(",");
        if (getIpv6Pool() != null)
            sb.append("Ipv6Pool: ").append(getIpv6Pool()).append(",");
        if (getIpv6CidrBlock() != null)
            sb.append("Ipv6CidrBlock: ").append(getIpv6CidrBlock()).append(",");
        if (getIpv4IpamPoolId() != null)
            sb.append("Ipv4IpamPoolId: ").append(getIpv4IpamPoolId()).append(",");
        if (getIpv4NetmaskLength() != null)
            sb.append("Ipv4NetmaskLength: ").append(getIpv4NetmaskLength()).append(",");
        if (getIpv6IpamPoolId() != null)
            sb.append("Ipv6IpamPoolId: ").append(getIpv6IpamPoolId()).append(",");
        if (getIpv6NetmaskLength() != null)
            sb.append("Ipv6NetmaskLength: ").append(getIpv6NetmaskLength());
        sb.append("}");
        return sb.toString();
    }
Returns a string representation of this object. This is useful for testing and debugging. Sensitive data will be
redacted from this string using a placeholder value.

@return A string representation of this object.

@see java.lang.Object#toString()
aws-java-sdk-ec2/src/main/java/com/amazonaws/services/ec2/model/AssociateVpcCidrBlockRequest.java