public ReportDefinition withS3Bucket(String s3Bucket) {
        setS3Bucket(s3Bucket);
        return this;
    }
@param s3Bucket
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-costandusagereport/src/main/java/com/amazonaws/services/costandusagereport/model/ReportDefinition.java