public ReportDefinition withS3Region(AWSRegion s3Region) {
        this.s3Region = s3Region.toString();
        return this;
    }
@param s3Region
@return Returns a reference to this object so that method calls can be chained together.
@see AWSRegion
aws-java-sdk-costandusagereport/src/main/java/com/amazonaws/services/costandusagereport/model/ReportDefinition.java