@Override
    public String toString() {
        StringBuilder sb = new StringBuilder();
        sb.append("{");
        if (getApplication() != null)
            sb.append("Application: ").append(getApplication()).append(",");
        if (getCurrentRevisionId() != null)
            sb.append("CurrentRevisionId: ").append(getCurrentRevisionId()).append(",");
        if (getS3Etags() != null)
            sb.append("S3Etags: ").append(getS3Etags()).append(",");
        if (getImageDigest() != null)
            sb.append("ImageDigest: ").append(getImageDigest());
        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-robomaker/src/main/java/com/amazonaws/services/robomaker/model/CreateRobotApplicationVersionRequest.java