如何使用Java中的Apache Poi取消隐藏Excel中的隐藏行？

I have:

import org.apache.poi.ss.usermodel.Row;

if ((currentRow = sheet.getRow(currentDataRow)) == null) {
            currentRow = sheet.createRow(currentDataRow);   // Creates a new row.
        }

// How to un-hide currentRow ?
import org.apache.poi.ss.usermodel.Ro