@Override
    public String toString() {
        StringBuilder sb = new StringBuilder();
        sb.append("{");
        if (getEngine() != null)
            sb.append("Engine: ").append(getEngine()).append(",");
        if (getEngineVersion() != null)
            sb.append("EngineVersion: ").append(getEngineVersion()).append(",");
        if (getDatabaseInstallationFilesS3BucketName() != null)
            sb.append("DatabaseInstallationFilesS3BucketName: ").append(getDatabaseInstallationFilesS3BucketName()).append(",");
        if (getDatabaseInstallationFilesS3Prefix() != null)
            sb.append("DatabaseInstallationFilesS3Prefix: ").append(getDatabaseInstallationFilesS3Prefix()).append(",");
        if (getImageId() != null)
            sb.append("ImageId: ").append(getImageId()).append(",");
        if (getKMSKeyId() != null)
            sb.append("KMSKeyId: ").append(getKMSKeyId()).append(",");
        if (getDescription() != null)
            sb.append("Description: ").append(getDescription()).append(",");
        if (getManifest() != null)
            sb.append("Manifest: ").append(getManifest()).append(",");
        if (getTags() != null)
            sb.append("Tags: ").append(getTags()).append(",");
        if (getSourceCustomDbEngineVersionIdentifier() != null)
            sb.append("SourceCustomDbEngineVersionIdentifier: ").append(getSourceCustomDbEngineVersionIdentifier()).append(",");
        if (getUseAwsProvidedLatestImage() != null)
            sb.append("UseAwsProvidedLatestImage: ").append(getUseAwsProvidedLatestImage());
        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-rds/src/main/java/com/amazonaws/services/rds/model/CreateCustomDBEngineVersionRequest.java