@Override
    public String toString() {
        StringBuilder sb = new StringBuilder();
        sb.append("{");
        if (getAttachmentId() != null)
            sb.append("AttachmentId: ").append(getAttachmentId()).append(",");
        if (getPrivateIpv4Address() != null)
            sb.append("PrivateIpv4Address: ").append(getPrivateIpv4Address()).append(",");
        if (getIpv6Address() != null)
            sb.append("Ipv6Address: ").append(getIpv6Address());
        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-ecs/src/main/java/com/amazonaws/services/ecs/model/NetworkInterface.java