NPOI Word: How to clone row and insert it at the specified index?

Question

I have a table in a Word document with 3 rows: 1st for Header, 2nd for Data placeholder, and 3rd for Summary. I want to clone the second row right after it - before Summary row. What I tried to do using NPOI:

XWPFTableRow.CloneRow() - it works but adds a new row at the end of the table:

XWPFTableRow newRow = dataRow.CloneRow();

I looked at the CloneRow() source code and tried to repeat the behavior changing Add() to Insert(). But the new row didn't appear at all:

var ctBaseRow = dataRow.GetCTRow();
var newRow = new XWPFTableRow(ctBaseRow.Copy(), table);
table.Rows.Insert(newIndex, newRow);

There is also the InsertNewTableRow() method that breaks the table:

var newRow = table.InsertNewTableRow(newIndex);

And Copy() method with no effect:

XWPFTableRow newRow = dataRow.Copy();
table.Rows.Insert(newIndex, newRow);

The question is: How to clone a row and insert it at the specified index?