public GetDataSourceResult withNumberOfFiles(Long numberOfFiles) {
        setNumberOfFiles(numberOfFiles);
        return this;
    }
<p>
The number of data files referenced by the <code>DataSource</code>.
</p>

@param numberOfFiles
       The number of data files referenced by the <code>DataSource</code>.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-machinelearning/src/main/java/com/amazonaws/services/machinelearning/model/GetDataSourceResult.java