@Override
    public String toString() {
        StringBuilder sb = new StringBuilder();
        sb.append("{");
        if (getSource() != null)
            sb.append("Source: ").append(getSource()).append(",");
        if (getDestination() != null)
            sb.append("Destination: ").append(getDestination()).append(",");
        if (getMetric() != null)
            sb.append("Metric: ").append(getMetric()).append(",");
        if (getStatistic() != null)
            sb.append("Statistic: ").append(getStatistic());
        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/EnableAwsNetworkPerformanceMetricSubscriptionRequest.java